Downhill Differences Slides DOWNHILL DIFFERENCES
Podium Power Subtraction: Lesson 1
Today's Goal
I can subtract 0 and 1 from numbers up to 20 with speed and accuracy.
Unit: Subtraction Fluency Strategy: Downhill Count
Moving Down the Mountain
Subtracting 1
Like one hop down! Land on the number just before.
15 − 1 = 14
Subtracting 0
Stay perfectly still! The number stays the same.
15 − 0 = 15
Slalom Practice
18 − 1 =
?
12 − 0 =
?
20 − 1 =
?
9 − 0 =
?
The Total Wipeout
Subtracting a number from ITSELF
When you take away the whole thing, you have ZERO left!
14 − 14 = 0
7 − 7 = 0
READY TO TRAIN?
Grab your Downhill Differences Practice Sheet .
5 Minutes
Focus: Fluency
Downhill Differences Practice Sheet Downhill Differences
Subtraction Fluency: Lesson 1
Name: __________________________
Date: ___________________________
Ski Pro Rules
Subtract 0: Stays same
Subtract 1: One back
Subtract same: Zero!
15 − 1 =
12 − 0 =
18 − 18 =
20 − 1 =
9 − 0 =
11 − 1 =
6 − 6 =
14 − 1 =
13 − 0 =
17 − 1 =
Slalom Sprint
A ski coach has 19 gold medals. He gave 0 away during practice. How many are left?
19 − 0 = ______
Downhill Differences Exit Ticket Exit Ticket: Lesson 1
Name: __________________________ Score: ____ / 5
The Quick Run
1. 16 − 1 =
2. 10 − 0 =
3. 13 − 13 =
4. 20 − 1 =
5. 11 − 0 =
How do you feel about today's goal?
Need help
Getting there
Pro!
Curling Count Up Slides CURLING COUNT UP
Podium Power Subtraction: Lesson 2
Pro Scorer Goal
I can use the Counting Up strategy to find the difference between two numbers.
Aiming for the House
When the numbers are CLOSE...
It's easier to start at the smaller number and count up to find the gap!
11 - 8 = ?
Think: "8 plus WHAT equals 11?"
8
9
10
11
That's a gap of 3!
Sweeping for Points
A. 15 - 12 =
Count up from 12: 13, 14, 15... 3
B. 19 - 17 =
Count up from 17: 18, 19... 2
C. 14 - 11 =
Count up from 11:
?
D. 18 - 14 =
Count up from 14:
?
USE YOUR FINGERS!
When counting up small gaps, your fingers are like sweepers on the ice! Start with a closed fist at the small number, then pop up a finger for each count until you hit the big number.
Curling Count Up Practice Sheet Curling Count Up
Subtraction Fluency: Lesson 2
Name: __________________________
Date: ___________________________
Coach's Tip: The Count Up
When numbers are close, don't count back! Start at the smaller number and count up to the bigger one.
11 − 9 =
Think: 9 + ___ = 11
15 − 13 =
Think: 13 + ___ = 15
18 − 15 =
12 − 10 =
17 − 14 =
20 − 18 =
13 − 10 =
16 − 14 =
Sweeper Challenge
Blue Team has 19 points. Red Team has 16. How many more points does Blue have?
16 → ____ → ____ → 19
Curling Count Up Exit Ticket Exit Ticket: Lesson 2
Name: __________________________ Score: ____ / 4
THE HAMMER SHOT
1. 12 − 9 =
Count up marks
2. 17 − 15 =
3. 14 − 11 =
4. 20 − 17 =
Post-Game Report
Hard
Okay
Pro!
Puck Play Slides PUCK PLAY 10s
PODIUM POWER SUBTRACTION: LESSON 3
Game Plan
I can subtract from 10 using my "Friends of 10" knowledge.
Teammates of 10
If you know who makes 10, you know who is left over!
9 + 1
10 - 9 = 1
8 + 2
10 - 8 = 2
7 + 3
10 - 7 = 3
6 + 4
10 - 6 = 4
5 + 5
10 - 5 = 5
10 - 3 = ?
Think: "3 + what = 10?" 7
Power Play Practice
10 - 8 =
?
10 - 4 =
?
10 - 1 =
?
10 - 7 =
?
GOAL!
Knowing your friends of 10 makes you a scoring machine! Take this speed to your practice sheet.
Puck Play Practice Sheet Puck Play 10s
Subtraction Fluency: Lesson 3
Name: __________________________
Date: ___________________________
Teammates of 10
When you subtract from 10, think: "What number plus this one makes 10?"
10 − 8 =
10 − 3 =
10 − 6 =
10 − 1 =
10 − 5 =
10 − 9 =
10 − 2 =
10 − 4 =
Goal Challenge
The team needs 10 goals. They have 7. How many more goals?
10 − 7 = ______
Puck Play Exit Ticket Exit Ticket: Lesson 3
Name: __________________________ Score: ____ / 4
THE OVERTIME SHOT
1. 10 − 7 =
2. 10 − 4 =
3. 10 − 8 =
4. 10 − 2 =
Self-Rating:
Rookie
Starter
All-Star
Half Pipe Halves Slides HALF PIPE HALVES
PODIUM POWER SUBTRACTION: LESSON 4
Pro Shredder Goal
I can solve half facts by using what I know about doubles.
Perfect Symmetry
Think Doubles!
A half-pipe is the same on both sides. If you know that 8 + 8 = 16, then you know half of 16 is 8!
16 - 8 = 8
8
8
16
Half of 16 is... 8
Rapid Air Practice
12 - 6 =
?
14 - 7 =
?
18 - 9 =
?
20 - 10 =
?
SHRED THE HALVES
When you see a subtraction problem, ask yourself:
Half Pipe Halves Practice Sheet Half Pipe Halves
Subtraction Fluency: Lesson 4
Name: __________________________
Date: ___________________________
Shredder Strategy: Halves
If you know that 6 + 6 = 12, then you know 12 - 6 = 6.
8 - 4 =
12 - 6 =
16 - 8 =
14 - 7 =
10 - 5 =
18 - 9 =
20 - 10 =
6 - 3 =
High Air Challenge
A snowboarder has 16 minutes to practice. She spends half of her time on the big jump. How many minutes are left?
16 - 8 = ______
Half Pipe Halves Exit Ticket Exit Ticket: Lesson 4
Name: __________________________ Score: ____ / 4
THE PERFECT RUN
1. 12 − 6 =
2. 18 − 9 =
3. 14 − 7 =
4. 16 − 8 =
Landing Status:
Wipeout
Steady
Epic!
Bobsled Backtrack Slides BOBSLED BACKTRACK
PODIUM POWER SUBTRACTION: LESSON 5
Race Strategy
I can use a Number Line to subtract by jumping back.
Reverse the Course
Bobsleds go fast, but we jump back slow!
Start at the big number. Jump back the small number of times. Where did you land?
0 5 10 15
11
15 - 4 = 11
Full Speed Practice
12 - 3 =
?
18 - 5 =
?
14 - 4 =
Friendly 10! ?
20 - 6 =
?
DRIVE THE LINE
Keep your jumps small and even. One jump for every number you subtract!
Bobsled Backtrack Practice Sheet Bobsled Backtrack
Subtraction Fluency: Lesson 5
Name: __________________________
Date: ___________________________
Track Rules: Jump Back!
Start at the first number and take small jumps back for the second number.
12 − 4 =
0 5 10 15 20
15 − 3 =
0 10 20
18 − 6 =
0 10 20
20 − 5 =
0 10 20
The Final Turn
A bobsled team has 17 seconds left. They lose 4 seconds. How many seconds left?
17 − 4 = ______
Bobsled Backtrack Exit Ticket Exit Ticket: Lesson 5
Name: __________________________ Score: ____ / 4
THE TRACK TIME
1. 14 − 3 =
2. 19 − 5 =
3. 11 − 4 =
4. 13 − 6 =
How did you drive?
Slow
Steady
TURBO!
Bobsled Bridges Slides BOBSLED BRIDGES
PODIUM POWER: STRATEGY 2 - NUMBER LINES
Pro Efficiency
I can subtract efficiently by bridging to 10 on a number line.
The 10-Second Pit Stop
10
Why stop at 10?
Ten is our "Safety Zone." It's easier to jump to 10 first, then jump the rest!
14 - 6 = ?
14
Start
10
Jump -4
8
Jump -2
Total jumps: 4 + 2 = 6!
Bridge Practice
13 - 5 =
13 → 10 → ?
?
12 - 7 =
12 → 10 → ?
?
15 - 8 =
15 → 10 → ?
?
11 - 4 =
11 → 10 → ?
?
CHAMPION'S SPEED
The bridge to 10 is the fastest way through the track. Master the pit stop!
Bobsled Bridges Practice Sheet Bobsled Bridges
Subtraction Fluency: Lesson 6
Name: __________________________
Date: ___________________________
Track Map: Bridge to 10
Jump back to 10 first, then jump the rest!
12 − 5 =
12 → 10 − 3 = ____
14 − 6 =
14 → 10 − 2 = ____
11 − 4 =
11 → 10 − 3 = ____
15 − 8 =
Podium Bridge
A driver started with 13 fuel canisters. She used 7. Use the bridge strategy!
13 − 7 = ______
Bobsled Bridges Exit Ticket Exit Ticket: Lesson 6
Name: __________________________ Score: ____ / 4
THE SPEED BRIDGE
1. 12 − 5 =
Think: 12 − 2 = 10, then 10 − 3 = ____
2. 14 − 7 =
Think: 14 − 4 = 10, then 10 − 3 = ____
3. 11 − 6 =
4. 15 − 9 =
Strategy Rating:
Lost
Bridging
EXPERT
Speed Skating Lines Slides THE LONG TRACK
PODIUM POWER: OPEN NUMBER LINES
Strategy Focus
I can use an Open Number Line to find the difference between numbers.
Free Style Skating
No Ticks Needed!
An open number line has no numbers written on it yet. You decide where they go!
Problem: 19 - 7 = ?
7
19
Skater's Choice
Jump forward from small to big.
Jump back from big to small.
Land on a 10 to move faster!
Speed Lap Practice
17 - 8 =
Think: 8 → 10 → 17 ?
14 - 9 =
Think: 9 → 10 → 14 ?
16 - 7 =
Think: 7 → 10 → 16 ?
20 - 12 =
Think: 12 → 20 ?
CROSS THE LINE
Open number lines give you the freedom to jump however you want. Find your own winning path!
Speed Skating Lines Practice Sheet The Long Track
Subtraction Fluency: Lesson 7
Name: __________________________
Date: ___________________________
Skater's Tip: Open Lines
Mark the small number on the left and the big number on the right. Jump forward!
15 − 9 =
18 − 12 =
14 − 6 =
Speed Challenge
A skater is on a 19-meter track. He has skated 11 meters. How far left?
19 − 11 = ______
Speed Skating Lines Exit Ticket Exit Ticket: Lesson 7
Name: __________________________ Score: ____ / 4
THE FINISH LINE
1. 16 − 8 =
2. 14 − 9 =
3. 17 − 11 =
4. 13 − 5 =
Skating Speed:
Warm Up
RECORD BREAKER!
Slapshot Ten Slides SLAPSHOT TEN
PODIUM POWER: STRATEGY 3 - MAKING 10
Game Goal
I can subtract by Making 10 through decomposition.
Snap to 10!
10
Hit the target of 10 first!
Decompose the second number to make the first number land on 10.
14 - 6 = ?
14
4
Takes us to 10
2
The rest
Result: 10 - 2 = 8
Power Play Practice
13 - 5 =
13 - 3
10 - 2
8
15 - 7 =
15 - 5
10 - ?
?
11 - 4 =
11 - 1
10 - ?
?
16 - 8 =
16 - 6
10 - ?
?
DEFEND THE 10
Always look for the friendly 10! It's the best teammate you'll ever have.
Slapshot Ten Practice Sheet Slapshot Ten
Subtraction Fluency: Lesson 8
Name: __________________________
Date: ___________________________
Making 10
To solve 14 − 6, snap to 10 first! 14 − 4 = 10, then 10 − 2 = 8.
12 − 5 =
12 − 2 = 10 → 10 − 3 = ___
13 − 6 =
13 − 3 = 10 → 10 − 3 = ___
15 − 7 =
15 − 5 = 10 → 10 − 2 = ___
11 − 4 =
Power Play
The team has 15 pucks. They lost 8. How many left? Show the snap!
15 − 5 − 3 = ______
Slapshot Ten Exit Ticket Exit Ticket: Lesson 8
Name: __________________________ Score: ____ / 4
THE WINNING SHOT
1. 13 − 5 =
Show snap: 13 − 3 = 10, then 10 − ____ = ____
2. 15 − 7 =
3. 12 − 6 =
4. 11 − 5 =
Your Shot:
BULLSEYE!
Power Play Frames Slides POWER PLAY FRAMES
PODIUM POWER: VISUALIZING MAKING 10
Game Vision
I can use Double Ten-Frames to see how to subtract through 10.
Emptying the Ice
Example: 13 - 5
The top frame is FULL (10). The bottom frame has 3 pucks. Total = 13.
The Two-Step Clear:
Remove the 3 pucks from the bottom frame. (Now you have 10).
Remove 2 more from the top frame. (The rest).
"Bye-bye bottom frame!"
Frame Work Practice
12 - 4 =
Clear the 2... Then 2 more! 8
15 - 6 =
Clear the 5... Then 1 more! ?
11 - 5 =
Clear the 1... Then 4 more! ?
14 - 9 =
Clear the 4... Then 5 more! ?
SEE THE 10
When you visualize the frames, you don't need to count. You can just SEE the answer!
Power Play Frames Practice Sheet Power Play Frames
Subtraction Fluency: Lesson 9
Name: __________________________
Date: ___________________________
Frame Vision Example
To solve 13 − 5 :8 .
13 − 5 = 8
12 − 4 =
14 − 6 =
Blue Line
A player has 15 pucks. He passes 6 to teammates. How many left?
15 − 6 = ____
Power Play Frames Exit Ticket Exit Ticket: Lesson 9
Name: __________________________ Score: ____ / 4
THE FRAME FINAL
1. 12 − 5 =
Visualize frames
2. 14 − 8 =
3. 11 − 6 =
4. 13 − 7 =
Frame Vision Status:
Blurry
X-RAY VISION!
The Great Chase Slides THE GREAT CHASE
PODIUM POWER: STRATEGY 4 - PRETEND 10
The Chase Goal
I can subtract 9 by pretending it's 10 and adjusting.
The Fast Adjustment
Real Race
15 - 9
Pretend Race
15 - 10
Wait! 10 is too much!
If you take away 10, you took away 1 too many. Just give 1 back!
15 - 10 = 5
5 + 1 = 6
Great Chase Practice
14 - 9 =
14 - 10 is 4... plus 1! 5
17 - 9 =
17 - 10 is 7... plus 1! ?
12 - 9 =
12 - 10 is 2... plus 1! ?
16 - 9 =
16 - 10 is 6... plus 1! ?
TURBO SPEED
Subtracting 10 is always faster than subtracting 9. Use the trick to get ahead!
The Great Chase Practice Sheet The Great Chase
Subtraction Fluency: Lesson 10
Name: __________________________
Date: ___________________________
Chase Strategy: Pretend 10
To subtract 9, subtract 10 first, then add 1 back!
14 - 9 =
14 - 10 = 4 → 4 + 1 = ___
12 - 9 =
12 - 10 = 2 → 2 + 1 = ___
17 - 9 =
11 - 9 =
16 - 9 =
13 - 9 =
Great Chase Challenge
A skater needs 18 laps. She has finished 9 laps. How many laps are left?
18 - 9 = ______
The Great Chase Exit Ticket Exit Ticket: Lesson 10
Name: __________________________ Score: ____ / 4
THE SPEED CHECK
1. 13 − 9 =
Show trick: 13 − 10 = ____ → ____ + 1 = ____
2. 15 − 9 =
3. 11 − 9 =
4. 17 − 9 =
RECORD TIME!
Eight is Enough Slides EIGHT IS ENOUGH
PODIUM POWER: STRATEGY 4 - PRETEND 10
The Goal
I can subtract 8 by pretending it's 10 and adding 2 back.
The Even Faster Adjustment
Subtracting 8
14 - 8
Pretend 10
14 - 10
The +2 Rule:
Since 10 is 2 more than 8, we have to give 2 back to the answer!
14 - 10 = 4
4 + 2 = 6
Turbo Track Practice
13 - 8 =
13 - 10 is 3... plus 2! 5
15 - 8 =
15 - 10 is 5... plus 2! ?
11 - 8 =
11 - 10 is 1... plus 2! ?
17 - 8 =
17 - 10 is 7... plus 2! ?
CROSS THE LINE
Always check: Did I add back 1 or 2?
Eight is Enough Practice Sheet Eight is Enough
Subtraction Fluency: Lesson 11
Name: __________________________
Date: ___________________________
Speed Strategy: Pretend 10
To subtract 8, subtract 10 first, then add 2 back!
13 − 8 =
Pretend: 13 − 10 = 3 → 3 + 2 = ___
15 − 8 =
Pretend: 15 − 10 = 5 → 5 + 2 = ___
12 − 8 =
17 − 8 =
11 − 8 =
16 − 8 =
Speed Challenge
A skater has 20 energy snacks. She eats 8. How many are left?
20 − 8 = ______
Eight is Enough Exit Ticket Exit Ticket: Lesson 11
Name: __________________________ Score: ____ / 4
THE +2 ADJUSTMENT
1. 14 − 8 =
Show trick: 14 − 10 = ____ → ____ + 2 = ____
2. 12 − 8 =
3. 15 − 8 =
4. 18 − 8 =
FASTEST LAP!
The Adjuster Slides THE ADJUSTER
PODIUM POWER: STRATEGY 4 - PRETEND 10
The Goal
I can subtract 7 by pretending it's 10 and adding 3 back.
The Perfect Balance
Subtracting 7
12 - 7
Pretend 10
12 - 10
The +3 Rule:
7 is 3 away from 10. If you take 10 away, you must give 3 back to be fair!
12 - 10 = 2
2 + 3 = 5
Expert Track Practice
15 - 7 =
15 - 10 is 5... plus 3! 8
11 - 7 =
11 - 10 is 1... plus 3! ?
14 - 7 =
Double Fact? Or +3 Rule? ?
16 - 7 =
16 - 10 is 6... plus 3! ?
THE PRETEND 10 TEAM
- 9
+ 1 back
- 8
+ 2 back
- 7
+ 3 back
The Adjuster Practice Sheet The Adjuster
Subtraction Fluency: Lesson 12
Name: __________________________
Date: ___________________________
Speed Strategy: Pretend 10
To subtract 7, subtract 10 first, then add 3 back!5 .
15 − 7 =
Pretend: 15 − 10 = 5 → 5 + 3 = ___
11 − 7 =
Pretend: 11 − 10 = 1 → 1 + 3 = ___
14 − 7 =
16 − 7 =
13 − 7 =
18 − 7 =
Final Challenge
A skater needs 17 snacks. He ate 7. How many snacks are left? Use the trick!
17 − 7 = ______
The Adjuster Exit Ticket Exit Ticket: Lesson 12
Name: __________________________ Score: ____ / 4
THE +3 ADJUSTMENT
1. 12 − 7 =
Show trick: 12 − 10 = ____ → ____ + 3 = ____
2. 14 − 7 =
3. 15 − 7 =
4. 11 − 7 =
STRATEGY MASTERED!
Shredding Near Doubles Slides SHREDDING NEAR DOUBLES
PODIUM POWER: STRATEGY 5 - CLOSE TO DOUBLES
The Shred Goal
I can use my knowledge of Doubles to solve facts that are just one away.
Shredding the Neighbors
Hard Fact
15 - 7
Easy Double
14 - 7 = 7
The Neighbor Rule:
If 14 - 7 is 7, then 15 - 7 must be one more!
7 + 1 = 8
Answer: 8
Near Double Practice
13 - 6 =
Think: 12 - 6 = 6... so 13 - 6 = 7
17 - 8 =
Think: 16 - 8 = 8... so 17 - 8 = ?
11 - 5 =
Think: 10 - 5 = 5... so 11 - 5 = ?
19 - 9 =
Think: 18 - 9 = 9... so 19 - 9 = ?
SHRED THE GAP
When the first number is just ONE away from a double fact, use what you know to get the gold!
Shredding Near Doubles Practice Sheet Shredding Near Doubles
Subtraction Fluency: Lesson 13
Name: __________________________
Date: ___________________________
Shredder Strategy: Use a Double!
If a problem is close to a double, use the double to help!
15 − 7 =
Think: 14 − 7 = 7 → 7 + 1 = ___
11 − 5 =
Think: 10 − 5 = 5 → 5 + 1 = ___
13 − 6 =
17 − 8 =
19 − 9 =
9 − 4 =
Big Air Challenge
A snowboarder made 15 jumps. She landed 7 perfectly. How many wipeouts?
15 − 7 = ______
Shredding Near Doubles Exit Ticket Exit Ticket: Lesson 13
Name: __________________________ Score: ____ / 4
THE NEAR-DOUBLE SHRED
1. 13 − 6 =
Show double: 12 − 6 = ____ → ____ + 1 = ____
2. 15 − 7 =
3. 17 − 8 =
4. 11 − 5 =
CLEAN AIR!
Double Grab Grab Slides DOUBLE GRAB GRAB
PODIUM POWER: STRATEGY 5 - CLOSE TO DOUBLES
The Grab Goal
I can solve facts that are two away from a double by adjusting my answer.
The Double Grab Trick
The Hard Fact
16 - 6
Numbers are getting farther apart...
The Double You Know
12 - 6 = 6
Grab 2 More!
If 12 - 6 is 6, then 16 - 6 must be 4 more? Wait, let's look closer...
6 + 4 = 10
OR
16 - 6 = 10
Grab Two Practice
14 - 5 =
Think: 10 - 5 = 5... plus 4! 9
18 - 7 =
Think: 14 - 7 = 7... plus 4! ?
15 - 5 =
Think: 10 - 5 = 5... plus 5! 10
17 - 6 =
Think: 12 - 6 = 6... plus 5! ?
SHREDDER MASTER
You've mastered all the tricks!
Double Grab Grab Practice Sheet Double Grab Grab
Subtraction Fluency: Lesson 14
Name: __________________________
Date: ___________________________
Pro Tip: Grab the Double!
When a fact is further from a double, grab the double and add the gap!
14 − 5 =
Think: 10 − 5 = 5 → 5 + 4 = ___
18 − 7 =
Think: 14 − 7 = 7 → 7 + 4 = ___
16 − 6 =
15 − 5 =
17 − 6 =
13 − 4 =
Rail Challenge
A snowboarder hit 18 rails. 7 were long, the rest short. How many short?
18 − 7 = ______
Double Grab Grab Exit Ticket Exit Ticket: Lesson 14
Name: __________________________ Score: ____ / 4
THE DOUBLE GRAB
1. 14 − 5 =
Show double: 10 − 5 = ____ → ____ + 4 = ____
2. 18 − 7 =
3. 16 − 6 =
4. 17 − 6 =
Boarding Status:
Wipeout
X-GAMES PRO!
Strategic Slalom Slides Review STRATEGIC SLALOM
PODIUM POWER: MIXED STRATEGY REVIEW
The Master Goal
I can choose the best strategy to solve any subtraction problem within 20.
Navigating the Gates
Gate 1: Close Numbers
15 - 13
Strategy: COUNT UP
Gate 2: Subtracting 9 or 8
14 - 9
Strategy: PRETEND 10
Gate 3: Far Apart
11 - 4
Strategy: MAKING 10
Gate 4: Near a Double
13 - 6
Strategy: DOUBLES
Gate 5: Need a Map
Any Fact!
Strategy: NUMBER LINE
PRO!
Decision Point Practice
16 - 14 =
Best Strategy? Count Up
12 - 9 =
Best Strategy? Pretend 10
14 - 7 =
Best Strategy? Double
11 - 5 =
Best Strategy? Make 10
THINK FAST
Efficiency is about picking the trick that works the fastest for YOU. Let's head to the practice sheet!
Strategic Slalom Practice Sheet Strategic Slalom
Subtraction Fluency: Lesson 15
Name: __________________________
Date: ___________________________
Pick Your Trick!
Decide on a strategy: Count Up, Number Line, Making 10, Pretend 10, or Doubles.
14 - 12 =
Strategy: ________________
15 - 9 =
Strategy: ________________
11 - 4 =
Strategy: ________________
16 - 8 =
Strategy: ________________
13 - 7 =
Strategy: ________________
17 - 1 =
Strategy: ________________
The Ultimate Slalom
A skier has 18 gates. She passes 9 gates. How many left?
18 - 9 = ______
Strategic Slalom Exit Ticket Exit Ticket: Lesson 15
Name: __________________________ Score: ____ / 4
STRATEGY DASH
1. 13 − 11 =
2. 15 − 7 =
3. 11 − 9 =
4. 16 − 8 =
Pick a trick and stick it!
Olympic Final Slides THE PODIUM FINAL
UNIT COMPLETION ASSESSMENT
The Final Run
I can show my mastery of all subtraction strategies to earn my spot on the podium!
Your Training Kit
1
Counting Up
For close numbers (15-13)
2
Number Lines
For visualizing any gap
3
Making 10
Snap through 10 (11-4)
4
Pretend 10
The adjustment trick (-9, -8)
5
Doubles
Near double shreds (15-7)
FINISH LINE!
GAME TIME
Open your Olympic Final Assessment . Focus, choose your trick, and skate to the finish!
No Rush
Show Work
Olympic Final Assessment Sheet Olympic Podium Final
Athlete: __________________________
Date: ___________________________
Score: ____ / 20
Round 1: Rapid Fire Fluency
1. 18-1=
2. 12-0=
3. 10-7=
4. 16-8=
5. 20-10=
6. 18-9=
7. 14-1=
8. 15-15=
9. 11-1=
10. 13-0=
11. 19-1=
12. 10-5=
Round 2: Strategic Choice
13. 15 − 13 =
Count Up Pretend 10 Double
14. 14 − 9 =
Count Up Pretend 10 Double
Round 3: Show Your Skill
15. 15 − 7 = ____
Double Strategy? (14-7=7)
16. 19 − 11 = ____
11 19
Round 4: Technical Laps
17. Hockey Gear
The team has 14 sticks. 6 snapped during the game. How many left?
14 − 6 = ____
18. Speed Skating
20 skaters started the final. 5 skaters fell. How many finished?
20 − 5 = ____
19. Curling Rocks
Team USA has 16 rocks. Team Canada has 12. What's the difference?
16 − 12 = ____
The Podium Goal
20. An Olympic bobsled track has 20 turns. The pilot has successfully made 13 turns. How many turns are left to reach the bottom?
20 − 13 = ______
Victory is yours! Podium Power Strategy Unit Completed.
Olympic Final Reflection Sheet Exit Ticket: Lesson 16
Name: __________________________ Gold Medalist
CHAMPION'S REFLECTION
1. Which subtraction strategy was your FAVORITE?
Counting Up
Number Lines
Making 10
Pretend 10
Doubles / Halves
2. Why did you like this strategy best?
3. Solve this one last challenge using your best trick!
20 − 11 =
You are a Subtraction Pro!
Warm Up 1 Choral 10s Olympic Training Camp
Warm-Up 1: Speed Laps
"Choral Count by 10s to hit 100!"
10
20
30
40
50
60
70
80
90
100
Build that mental muscle!
Warm Up 2 Choral 5s Olympic Training Camp
Warm-Up 2: Slalom Gates
"Choral Count by 5s to hit 50!"
5
10
15
20
25
30
35
40
45
50
Speed through the gates!
Warm Up 3 Choral 2s Olympic Training Camp
Warm-Up 3: Skating Steps
"Choral Count by 2s to hit 20!"
2
4
6
8
10
12
14
16
18
20
Steady strides win the gold!
Warm Up 4 Choral 10s NonZero Olympic Training Camp
Warm-Up 4: Obstacle Course
"Choral Count by 10s starting at 3!"
3
13
23
33
43
53
63
73
83
93
Off-road counting skills!
Warm Up 5 Choral Back 10s Olympic Training Camp
Warm-Up 5: The Countdown
"Choral Count Backwards by 10s!"
100
90
80
70
60
50
40
30
20
10
Ready for the jump!
Warm Up 6 Choral Back 5s Olympic Training Camp
Warm-Up 6: The Relay
"Choral Count Backwards by 5s!"
50
45
40
35
30
25
20
15
10
5
Hand off the count!
Skeleton Close Doubles Slides SKELETON SHRED
PODIUM POWER: CLOSE TO DOUBLES
Strategy Goal
I can solve Close-to-Double facts with precision and speed.
Think Halves!
If you know...
14 − 7 = 7
Then you know...
15 − 7 = 8
"It's just one more step on the track!"
Precision Adjustment: ± 1
Skeleton Speed Practice
13 − 6 =
12 − 6 = 6... so 7! 7
17 − 8 =
16 − 8 = 8... so 9! ?
11 − 5 =
10 − 5 = 5... so 6! ?
15 − 8 =
Careful! Is it 7 or 8? ?
GOLD MEDAL TIP
If the subtraction fact is ALMOST a double, use your addition doubles to solve it in a flash!
Close to Doubles Practice Sheet Skeleton Shred
Subtraction Fluency: Lesson 17
Name: __________________________
Date: ___________________________
Close-Double Trick
If a fact is just one away from a double, solve the double and adjust!8 .
13 − 6 =
Think: 12 − 6 = 6 → 6 + 1 = ___
17 − 8 =
Think: 16 − 8 = 8 → 8 + 1 = ___
11 − 5 =
19 − 9 =
15 − 8 =
13 − 7 =
Track Precision
A racer finished in 15 seconds. The record was 7 seconds. How far off was he?
15 − 7 = ______
Skeleton Close Doubles Exit Ticket Exit Ticket: Lesson 17
Name: __________________________ Score: ____ / 4
SKELETON SPEED CHECK
1. 15 − 7 =
Think: 14 − 7 = 7... plus 1!
2. 13 − 6 =
3. 11 − 5 =
4. 17 − 8 =
Speed Rating: ± 1 Accuracy
The Mixed Strategy Relay Slides THE MIXED RELAY
PODIUM POWER: SPEED & CHOICE
Relay Goal
I can solve mixed subtraction problems by choosing the fastest strategy for my brain.
Smooth Transitions
Sprint 1: 19 − 17
Numbers are close!
Strategy: COUNT UP
17, 18, 19... Answer: 2
Sprint 2: 15 − 9
Subtracting 9!
Strategy: PRETEND 10
15-10=5... +1 = 6
Timed Relay Laps
11 − 3 =
Think: Bridge to 10?
16 − 14 =
Think: Count Up?
14 − 7 =
Think: Double Fact?
15 − 8 =
Think: Pretend 10?
TEAM EFFORT
Your strategies are your teammates. Use the one that gets you to the finish line the fastest!
Mixed Review Practice Sheet Mixed Strategy Relay
Subtraction Fluency: Lesson 18
Name: __________________________
Date: ___________________________
The Champion's Choice
Which strategy is best? Choose: Count Up, Making 10, Pretend 10, or Doubles.
19 − 17 =
Strategy: ________________
13 − 9 =
Strategy: ________________
11 − 4 =
Strategy: ________________
16 − 8 =
Strategy: ________________
15 − 6 =
Strategy: ________________
17 − 8 =
Strategy: ________________
Relay Dash
A team of 20 athletes is ready. 13 have already crossed. How many still racing?
20 − 13 = ______
The Pretend 10 Sprint Slides THE PRETEND 10 SPRINT
PODIUM POWER: ADVANCED SPEED TRICKS
Sprint Goal
I can use the Pretend 10 Trick to solve any fact with 9, 8, or 7.
Checking the Ice
− 9
Subtract 10
+ 1 back
− 8
Subtract 10
+ 2 back
− 7
Subtract 10
+ 3 back
Power Sprint Practice
14 − 8 =
14 − 10 = 4... + 2 = 6
12 − 7 =
12 − 10 = 2... + 3 = 5
11 − 9 =
11 − 10 = 1... + 1 = 2
15 − 7 =
15 − 10 = 5... + 3 = ?
SMOOTH ICE
When your pretend 10 trick is smooth, nobody can catch you on the track!
The Pretend 10 Sprint Exit Ticket Exit Ticket: Lesson 19
Name: __________________________ Score: ____ / 4
PRETEND 10 SPRINT
1. 14 − 9 =
2. 12 − 8 =
3. 15 − 7 =
4. 11 − 8 =
Speed Strategy Showcase
The Slapshot Sprint Slides THE SLAPSHOT SPRINT
PODIUM POWER: TIMED FLUENCY
Final Sprint Goal
I can solve subtraction problems accurately and quickly to finish the season strong.
Quick Stick Moves
11 − 9 =
"Subtract 10... add 1 back!"
16 − 14 =
"Count up from 14... 15, 16!"
14 − 8 =
"Subtract 10... add 2 back!"
12 − 6 =
"Double Fact! Half of 12 is 6!"
1:00
One Minute Sprint!
FINISH LINE
You've trained hard. You've learned the tricks. Now go win the gold on your practice sheet!
The Slapshot Sprint Practice Sheet The Slapshot Sprint
Subtraction Fluency: Lesson 20
Name: __________________________
Date: ___________________________
Final Sprint
The timer is on! Solve these 10 mixed problems as fast as you can. Use your tricks!
15 − 1 =
10 − 4 =
12 − 6 =
14 − 9 =
11 − 3 =
17 − 15 =
20 − 10 =
13 − 8 =
15 − 7 =
18 − 0 =
Victory Lap!
You are a subtraction champion!
Final Sprint Time
_____:_____
