Operation Lab Practice Worksheet
Tier 1 Skill Track
Target 20: Core Operations
NAME:
DATE:
1
Bridge to Ten Strategy: Make a full 10 first, then add the leftovers (\(8 + 5 = 10 + 3 = 13\)).
2
Inverse Check: If \(10 + 4 = 14\), then \(14 - 4 = 10\).
Part 1: Ten-Frame Register Addition
Draw circles or arrows to complete the first ten-frame.
Problem 1: \( 9 + 5 = \underline{\quad\quad} \) Frame System
Bridge Step: \( 10 + \) _____ = Total: _____
Problem 2: \( 8 + 6 = \underline{\quad\quad} \) Frame System
Bridge Step: \( 10 + \) _____ = Total: _____
Part 2: Subtraction Jump Models
Jump back to 10 first, then jump back the rest.
Problem 3: \( 14 - 6 = \underline{\quad\quad} \) Two-stage hop: \( -4 \) to reach 10, then \( -2 \)
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Problem 4: \( 15 - 7 = \underline{\quad\quad} \) Show your hops back from 15
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Part 3: Fact Family Link Chains
15
7 8
7 + 8 = _____
15 − 8 = _____
8 + 7 = _____
15 − 7 = _____
15
6 9
6 + 9 = _____
15 − 9 = _____
9 + 6 = _____
15 − 6 = _____
Tournament Challenge Esports Match Tracker
In a gaming battle, Team Apex scored 8 power tokens in Round 1 and 7 power tokens in Round 2. What was their total score?
Equation: _____ + _____ =
total tokens
OPERATION LAB • MODULE 1 PAGE 1 OF 2 • TIER 1
Tier 2 Skill Track
Target 100: Dual-Digit Operations
NAME:
DATE:
A
Decomposition (Split Strategy): Break numbers into Tens and Ones (\(34 + 25 = 50 + 9 = 59\)).
B
Open Number Line: Jump by 10s first, then jump by 1s.
Part 1: Tens and Ones Break-Apart Addition
Separate into tens and ones, then combine.
Problem 1: \( 43 + 35 = \underline{\quad\quad} \) Expanded Form
1. Add the Tens: 40 + 30 = _____
2. Add the Ones: 3 + 5 = _____
3. Combine Totals: _____ + _____ = _____
Problem 2: \( 52 + 27 = \underline{\quad\quad} \) Expanded Form
1. Add the Tens: 50 + 20 = _____
2. Add the Ones: 2 + 7 = _____
3. Combine Totals: _____ + _____ = _____
Part 2: Open Number Line Operations
Draw your jumps on the open number line.
Problem 3: \( 68 - 24 = \underline{\quad\quad} \) Start at 68 • Jump back 20 • Jump back 4
START HERE → [ 68 ]
Final Answer: 68 − 24 =
Problem 4: \( 45 + 32 = \underline{\quad\quad} \) Start at 45 • Jump forward 3 tens (+30) • Jump forward 2 (+2)
← START HERE [ 45 ]
Final Answer: 45 + 32 =
Tech & Media Lab Scenario Robotics Club Inventory
The 7th grade STEM lab started with 76 micro-controller chips. The competition teams used 34 chips to build their robotic rovers. How many chips remain in the supply kit?
Decompose Subtraction:
Tens: 70 − 30 = _____
Ones: 6 − 4 = _____
Final Inventory Statement:
There are chips remaining.
Strategy Reflection: Which tool helped you most?
Place Value Split Number Line Jumps
OPERATION LAB • MODULE 2 PAGE 2 OF 2 • TIER 2
Operation Lab Answer Key
Teacher Guide & Key
Tier 1 Solutions: Target 20
1st Grade Target in Middle School
Bridge-to-10 & Fact Families
Part 1 Answer Keys: Ten-Frame Addition
Problem 1: \( 9 + 5 \) Answer: 14
Bridge Step: Student moves 1 circle to fill the first frame.
10 + 4 = 14
Watch out for: Students recounting every dot one-by-one from 1 rather than seeing the complete 10 immediately.
Problem 2: \( 8 + 6 \) Answer: 14
Bridge Step: Student moves 2 circles to complete the ten.
10 + 4 = 14
Key Question: "How many empty spots does 8 need to become 10?" (Prompt: 2).
Part 2 Answer Keys: Number Line Subtractions
Problem 3: \( 14 - 6 \) Answer: 8
Jump 1: From 14 jump back 4 to land on benchmark 10.
Jump 2: From 10 jump back remaining 2 to land on 8.
Result: 14 − 4 − 2 = 8
Problem 4: \( 15 - 7 \) Answer: 8
Jump 1: From 15 jump back 5 to reach benchmark 10.
Jump 2: From 10 jump back remaining 2 to reach 8.
Result: 15 − 5 − 2 = 8
Part 3 Answer Keys: Fact Family Link Chains
Triad {7, 8, 15} Solutions:
7 + 8 = 15 15 − 8 = 7 8 + 7 = 15 15 − 7 = 8
Triad {6, 9, 15} Solutions:
6 + 9 = 15 15 − 9 = 6 9 + 6 = 15 15 − 6 = 9
Part 4: Tournament Match Tracker Solution 8 + 7 = 15 total tokens
Scaffold check: Look for students who solve this using the doubles plus one strategy (\(7 + 7 + 1 = 15\) or \(8 + 8 - 1 = 15\)) as an alternative valid mental strategy.
! 7th Grade Dignity & Intervention Script
Prompting Questions:
- "Where is the nearest multiple of ten?"
- "If you know 8 + 7, what is 15 minus 7 without recalculating?"
- "How did we partition that second number?"
Common Hesitation:
Middle schoolers often feel self-conscious counting on fingers. Validate models as "computational registers" and "game coordinate maps" to protect self-esteem while reinforcing mastery.
OPERATION LAB • TEACHER KEY PAGE 1 OF 2 • TIER 1 SUPPORT
Teacher Guide & Key
Tier 2 Solutions: Target 100
2nd Grade Target in Middle School
