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Adding Across Tens

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Adding Across Tens worksheet preview

Adding Across Tens

Number bridge illustration

🌉 Part 1: Bridge the Ten

Remember: When adding across tens, break the smaller number apart to reach the next ten first!

1. 29 + 4 = ____

Show your working: 29 + ___ = 30, then 30 + ___ = ____

2. 37 + 5 = ____

Show your working: 37 + ___ = 40, then 40 + ___ = ____

3. 48 + 6 = ____

Show your working: 48 + ___ = 50, then 50 + ___ = ____

4. 56 + 7 = ____

Show your working: 56 + ___ = 60, then 60 + ___ = ____

🎯 Part 2: Quick Fire Practice

Solve these additions using the bridging ten method:

5. 19 + 3 = ____
6. 67 + 5 = ____
7. 28 + 4 = ____
8. 45 + 8 = ____
9. 39 + 6 = ____

💭 Part 3: Explain Your Thinking

10. Sarah solved 47 + 6 by saying: "47 + 3 = 50, then 50 + 3 = 53"

Explain why Sarah's method works:

11. Choose the best strategy for solving 58 + 4:

Count on 4 from 58

Add 2 to make 60, then add 2 more

Use a calculator

12. Challenge: Use the bridging method to solve 198 + 7 = ____

Show your working:

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