Fact Power Worksheet Day 1 • Practice Indiana Standard 3.CA.1
Fact Power Launch
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Everyday Math Strategy: Extended Facts Shortcut
If you know a basic fact like 4 + 5 = 9, you can use place-value to solve extended facts: 4 tens + 5 tens = 9 tens (40 + 50 = 90) and 400 + 500 = 900.
Part 1: Fact Extension Chains
Read-Aloud Direction: Solve the basic fact first, then write the extended facts.
1. Addition Chain: Basic Fact 6 + 7
6 + 7 =
60 + 70 =
600 + 700 =
2. Subtraction Chain: Basic Fact 15 - 8
15 - 8 =
150 - 80 =
1,500 - 800 =
Part 2: Open Number Line Jumps
Show jumps of 10s and 100s to solve each problem.
3. Solve: 48 + 30 = _____ Hint: Start at 48. Jump forward 3 tens (+10, +10, +10).
48 ?
4. Solve: 125 - 40 = _____ Hint: Start at 125. Jump backward 4 tens (-10, -10, -10, -10).
? 125
Sentence Frame: I used the basic fact to help me solve .
Everyday Math Unit 2 • Fact Power Launch Page 1 of 2
Day 1 • Number Stories Indiana Standard 3.CA.2
Number Story Missions
Vocabulary Bank:
total • in all • change • difference
DIAGRAM A
Parts-and-Total Diagram
Use when putting two or more parts together into a whole total.
DIAGRAM B
Change Diagram
Use when a starting quantity increases (+) or decreases (-).
Mission 1 (Parts-and-Total) Read-aloud friendly
The South Bend Library ordered 70 new graphic novels and 50 new chapter books . How many books did the library order in all?
Fill in the Parts-and-Total Diagram:
Total: ?
Part: 70
Part: 50
Extended fact: 7 tens + 5 tens = _____ tens
Number Sentence:
Explain Your Thinking:
"The library ordered books in all because I know 7 + 5 = , so 70 + 50 = ."
Mission 2 (Change Story) Read-aloud friendly
Marcus had 140 points in the Indiana State Fair arcade game. He bought a giant stuffed prize for 60 points . How many points does Marcus have left?
Fill in the Change Diagram:
Start 140
Change
- 60
End ?
Extended fact: 14 tens - 6 tens = _____ tens
Number Sentence:
- = points
Explain Your Thinking:
"Marcus has points left. I used the basic fact 14 - 6 = to solve 140 - 60."
Challenge Extension: Write Your Own Extended Fact
Pick any basic fact (like 9 + 4 = 13 or 8 - 3 = 5). Write the basic fact and two extended facts below:
Basic Fact
Extended (Tens)
Extended (Hundreds)
Everyday Math Unit 2 • Fact Power Launch Page 2 of 2
Fact Power Answer Key Teacher Answer Key • Day 1 Indiana Standard 3.CA.1
Fact Power Launch Key
Everyday Math Alignment: Unit 2
Instructional Focus & Common Misconceptions
Watch for students who add zeros without place-value understanding (e.g., writing 60 + 70 = 1300). Encourage students to verbalize with unit form: "6 tens plus 7 tens equals 13 tens; 13 tens is 130."
Part 1: Fact Extension Chains Solutions
1. Addition Chain: Basic Fact 6 + 7
6 + 7 = 13
60 + 70 = 130
600 + 700 = 1,300
Think: 6 tens + 7 tens = 13 tens (130). 6 hundreds + 7 hundreds = 13 hundreds (1,300).
2. Subtraction Chain: Basic Fact 15 - 8
15 - 8 = 7
150 - 80 = 70
1,500 - 800 = 700
Think: 15 tens - 8 tens = 7 tens (70). 15 hundreds - 8 hundreds = 7 hundreds (700).
Part 2: Open Number Line Jumps Solutions
3. Solve: 48 + 30 = 78 Strategy: Counting on by 10s
+10 (58) +10 (68) +10 (78)
48 78
4. Solve: 125 - 40 = 85 Strategy: Counting back by 10s
(85) -10 (95) -10 (105) -10 (115) -10 (125)
85 125
Sample Sentence Frame Response:
"I used the basic fact 6 + 7 = 13 to help me solve 60 + 70 = 130."
Everyday Math Unit 2 • Teacher Solutions Page 1 of 2
Teacher Answer Key • Day 1 Indiana Standard 3.CA.2
Number Story Missions Key
Scoring & Discussion Guide
Mission 1 Solution: South Bend Library Parts-and-Total Model
Problem: 70 graphic novels + 50 chapter books. Total books in all?
Completed Diagram:
Total: 120
Part: 70
Part: 50
7 tens + 5 tens = 12 tens (120)
Number Sentence:
70 + 50 = 120 books
Target Sentence Frame Response:
"The library ordered 120 books in all because I know 7 + 5 = 12 , so 70 + 50 = 120 ."
Mission 2 Solution: Arcade Points Change Model
Problem: 140 points at start, spent 60 points for prize. Points left?
Completed Diagram:
Start 140
Change - 60
End 80
14 tens - 6 tens = 8 tens (80)
Number Sentence:
140 - 60 = 80 points
Target Sentence Frame Response:
Sum Builder Worksheet Day 2 • Practice Indiana Standard 3.CA.1
Sum Builder Studio
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1. Ballpark Estimate
Round each number to the nearest 10 or 100 first to see what close number to expect!
2. Partial-Sums Method
Add the hundreds first, then tens, then ones. Finally, add all parts together.
Problem 1 • Guided Practice Solve: 247 + 185
Step A: Ballpark Estimate:
= (Nearest 10: 250 + 190)
Visual Place-Value Model
247: 2 flats (200), 4 longs (40), 7 cubes (7)
185: 1 flat (100), 8 longs (80), 5 cubes (5)
Regrouping Cue: 4 longs + 8 longs = 12 longs (120). Trade 10 longs for 1 flat!
Step B: Partial-Sums Workspace
100s 10s 1s
2 4 7
Add hundreds (200 + 100):
Add tens (40 + 80):
Add ones (7 + 5):
Total Sum:
Problem 2 • Independent Practice Solve: 368 + 254
Ballpark Estimate:
Show Your Work (Use Partial-Sums or Regrouping): Remember to line up digits by place value!
Thousands
Hundreds
Tens
Ones
Strategy Check: "My exact answer is close to my ballpark estimate of , so my answer is reasonable."
Everyday Math Unit 2 • Addition Strategies Page 1 of 2
Day 2 • Number Stories Indiana Standard 3.CA.2
Indiana Number Stories
Word Bank:
in all • combined • ballpark • reasonable
Everyday Math 3-Step Routine:
1. Ballpark Estimate 2. Draw Diagram / Work 3. Explain Reasonableness
Story 1: Indianapolis Zoo Visit Read-Aloud Direction: Read carefully and underline the numbers.
On Saturday, 358 students visited the Indianapolis Zoo dolphin pavilion. On Sunday, 267 students visited. How many students visited the dolphin pavilion combined over the weekend?
Ballpark Estimate:
Parts-and-Total Diagram:
Total: ?
Part: 358
Part: 267
Exact Calculation:
Answer: students in all
Language Support • Explain Reasonableness:
"My answer of students makes sense because my ballpark estimate was , and the two numbers are close."
Sum Builder Answer Key Teacher Answer Key • Day 2 Indiana Standard 3.CA.1
Sum Builder Studio Key
Everyday Math Alignment: Unit 2 & 3
Instructional Focus: Partial-Sums Method
The partial-sums method encourages place-value understanding by adding column by column from left to right (hundreds, then tens, then ones). This prevents the common error of misaligning regrouped digits.
Problem 1 Solution: 247 + 185 Target Sum: 432
Step A: Ballpark Estimate Solutions: Nearest 10: 250 + 190 = 440 | Nearest 100: 200 + 200 = 400
Base-Ten Analysis
Hundreds: 2 flats + 1 flat = 3 flats (300)
Tens: 4 longs + 8 longs = 12 longs (120)
Ones: 7 cubes + 5 cubes = 12 cubes (12)
Combined: 300 + 120 + 12 = 432
Step B: Partial-Sums Calculation
100s 10s 1s
2 4 7
Add hundreds (200 + 100): 3 0 0
Add tens (40 + 80): 1 2 0
Add ones (7 + 5): 1 2
Total Sum: 4 3 2
Problem 2 Solution: 368 + 254 Target Sum: 622
Ballpark Estimate Solutions: Nearest 10: 370 + 250 = 620 | Nearest 100: 400 + 300 = 700
Method A: Partial-Sums
300 + 200 = 500
60 + 50 = 110
8 + 4 = 12
500 + 110 + 12 = 622
Method B: Standard Regrouping
Ones: 8 + 4 = 12 (write 2, trade 1 ten)
Tens: 1 + 6 + 5 = 12 (write 2, trade 1 hundred)
Hundreds: 1 + 3 + 2 = 6
Result: 622
Reasonableness Justification:
"My exact answer of 622 is close to my ballpark estimate of 620 , confirming the calculation is reasonable."
Everyday Math Unit 2 • Teacher Solutions Page 1 of 2
Teacher Answer Key • Day 2 Indiana Standard 3.CA.2
Number Story Solutions Key
Rubric & Explanations
Story 1 Solution: Indianapolis Zoo Visit Sum: 625 students
Problem: 358 students on Saturday + 267 students on Sunday.
Completed Diagram & Ballpark:
Ballpark: 360 + 270 = 630
Total: 625
Part: 358
Part: 267
Calculation:
300 + 200 = 500
Trade First Worksheet Day 3 • Practice Indiana Standard 3.CA.1
Trade First Rescue
Name:
Date:
Everyday Math Rule: Trade First Before You Subtract!
Look at the columns before subtracting: Do I have enough ones? Do I have enough tens? If not, make all your trades in the trading boxes at the top first. Once your trades are done, subtract columns in any order!
Problem 1 • Guided Trade-First Solve: 542 - 278
Step A: Ballpark Estimate:
- = (Nearest 10: 540 - 280)
Step B: Column Trade Check
Ones Check: 2 ones - 8 ones?
Not enough! Trade 1 ten for 10 ones. (Now 12 ones).
Tens Check: 3 tens - 7 tens?
Not enough! Trade 1 hundred for 10 tens. (Now 13 tens).
Now all columns are ready to subtract!
Step C: Trade-First Grid
Trade Boxes:
100s 10s 1s
5 4 2
- 2 7 8
Difference:
Problem 2 • Counting-Up Strategy Everyday Math Alternative Strategy
Solve 415 - 386 = _____ by counting up from 386 to 415 on the open number line.
386 415
Total distance jumped (Difference):
Sentence Frame: "I traded 1 ten for 10 ones so I had ones, then I subtracted."
Everyday Math Unit 2 • Subtraction Strategies Page 1 of 2
Day 3 • Number Stories Indiana Standard 3.CA.2
Comparison Rescue Stories
Word Bank:
difference • how many more • trade • decrease
DIAGRAM C
Everyday Math Comparison Diagram
Use when comparing two quantities to find how many more or how many fewer .
Story 1: Children's Museum Visitors Read-aloud friendly
The Children's Museum of Indianapolis welcomed 634 visitors on Friday and 459 visitors on Thursday. How many more visitors came on Friday than on Thursday?
Ballpark Estimate:
- =
Comparison Diagram:
Quantity (Friday): 634
Quantity (Thursday): 459
Difference (?): ?
Trade-First Calculation:
Answer: more visitors
Sentence Frame • Conclusion:
"There were more visitors on Friday. I know this is reasonable because my ballpark estimate was ."
Story 2: School Book Fair Goal Two-Step Problem (Add & Subtract)
Trade First Answer Key Teacher Answer Key • Day 3 Indiana Standard 3.CA.1
Trade First Rescue Key
Everyday Math Alignment: Unit 2 & 3
Instructional Focus: Trade-First Subtraction
The trade-first method separates the trading phase from the subtracting phase. By making all trades first in the top boxes, students avoid the common trap of subtracting the smaller digit from the larger digit regardless of position.
Problem 1 Solution: 542 - 278 Target Difference: 264
Step A: Ballpark Estimate Solutions: Nearest 10: 540 - 280 = 260 | Nearest 100: 500 - 300 = 200
Trading Sequence
1. Ones trade: 2 < 8. Trade 1 ten for 10 ones. (4 tens becomes 3 tens; 2 ones becomes 12 ones).2. Tens trade: 3 < 7. Trade 1 hundred for 10 tens. (5 hundreds becomes 4 hundreds; 3 tens becomes 13 tens).
Ready to subtract: 4 hundreds, 13 tens, 12 ones.
Completed Trade-First Grid
Trade Boxes: 4 13 12
100s 10s 1s
5 4 2
- 2 7 8
Difference: 2 6 4
Problem 2 Solution: 415 - 386 Target Difference: 29
Strategy: Counting up from smaller number to larger number.
+4 (to 390) +10 (to 400) +15 (to 415)
386 415
Total Jumped: 4 + 10 + 15 = 29
Sample Sentence Frame Response:
"I traded 1 ten for 10 ones so I had 12 ones, then I subtracted 12 - 8 = 4."
Everyday Math Unit 2 • Teacher Solutions Page 1 of 2
Teacher Answer Key • Day 3 Indiana Standard 3.CA.2
Comparison Number Story Solutions
Rubric & Explanations
Story 1 Solution: Children's Museum Difference: 175 more visitors
Problem: 634 visitors Friday vs. 459 visitors Thursday. How many more?
Completed Comparison Diagram:
Ballpark: 630 - 460 = 170
Friday: 634
Thursday: 459
Difference: 175
Trade-First Steps:
1. Trade 1 ten for 10 ones: 34 becomes 2 tens, 14 ones.
2. Trade 1 hundred for 10 tens: 6 hundreds becomes 5 hundreds, 12 tens.
14 - 9 = 5 ones
12 - 5 = 7 tens
5 - 4 = 1 hundred
Result: 175
Target Sentence:
"There were 175 more visitors on Friday. I know this is reasonable because my ballpark estimate was 170 ."
Mixed Regrouping Worksheet Day 4 • Mastery Practice Indiana Standards 3.CA.1 & 3.CA.2
Mixed Regrouping Arena
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Date:
Everyday Math Cue: Check the sign first! (+) Add: Use partial-sums or trade 10 ones for 1 ten. (-) Subtract: Check columns and trade first!
Make a ballpark estimate for each problem!
1 Addition (+)
378 + 265
Ballpark: 380 + 270 =
100s 10s 1s
3 7 8
2 Subtraction (-)
624 - 358
Ballpark: 620 - 360 =
Trades:
6 2 4
- 3 5 8
3 Addition (+)
489 + 377
Ballpark: 490 + 380 =
100s 10s 1s
4 8 9
4 Subtraction (-) Across Zero
503 - 267
Ballpark: 500 - 270 =
Trades:
5 0 3
- 2 6 7
5 Indiana Number Story • Trail Hike
Decide the operation (+ or -)
At Turkey Run State Park, Trail 3 is 725 yards long . Elijah has hiked 388 yards so far. How many more yards does Elijah need to hike to reach the end of the trail?
Everyday Math Diagram:
Total Trail: 725
Hiked: 388
Remaining: ?
Operation: Addition [ ] Subtraction [ ]
Calculation Space:
Answer: yards remaining
Sentence Frame • Reasonableness:
"Elijah needs to hike more yards. I used because I needed to find the difference."
Everyday Math Cumulative Review • Mixed Regrouping Practice Page 1 of 1
Mixed Regrouping Answer Key Teacher Answer Key • Day 4 Indiana Standards 3.CA.1 & 3.CA.2
Mixed Regrouping Arena Key
Cumulative Mastery Guide
Instructional Diagnostic Goal:
Mixed operation practice assesses whether students automatically pay attention to the operational sign (+) or (-) and select appropriate strategies (partial-sums vs. trade-first) without teacher prompting.
1. Addition: 378 + 265 Sum = 643
Ballpark: 380 + 270 = 650
Hundreds: 300 + 200 = 500
Tens: 70 + 60 = 130
Ones: 8 + 5 = 13
500 + 130 + 13 = 643
Standard algorithm check: 8+5=13 (trade 1), 1+7+6=14 (trade 1), 1+3+2=6.
2. Subtraction: 624 - 358 Difference = 266
Ballpark: 620 - 360 = 260
Trade Boxes: [5] [11] [14]
Ones: 14 - 8 = 6
Tens: 11 - 5 = 6
Hundreds: 5 - 3 = 2
Difference = 266
Common error: subtracting 8-4=4 and 5-2=3 (result 334).
3. Addition: 489 + 377 Sum = 866
Ballpark: 490 + 380 = 870
Hundreds: 400 + 300 = 700
Tens: 80 + 70 = 150
Ones: 9 + 7 = 16
700 + 150 + 16 = 866
Reasonableness: 866 is very close to estimate 870.
4. Subtraction: 503 - 267 Difference = 236
Ballpark: 500 - 270 = 230
Trade Across Zero: [4] [9] [13]
Ones: 13 - 7 = 6
Tens: 9 - 6 = 3
Hundreds: 4 - 2 = 2
Difference = 236
Trade note: Trade 1 hundred to tens (10 tens), then 1 ten to ones (9 tens, 13 ones).
5. Number Story Solution: Turkey Run Trail Answer: 337 yards remaining
Model:
Operation: Subtraction (-)
Total: 725 yards
Hiked: 388 yards
725 - 388 = 337
Calculation Steps:
Trade 1 ten: 15 - 8 = 7 ones
Trade 1 hundred: 11 - 8 = 3 tens; 6 - 3 = 3 hundreds
Sentence Frame Exemplar:
"Elijah needs to hike 337 more yards. I used subtraction because I needed to find the difference between the total trail length and what he hiked."
Everyday Math Cumulative Review • Teacher Solutions Page 1 of 1
