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Tens Ones Addition Exit
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Tens Ones Addition Exit
Help the class supply cart count its items. Show how tens and ones help you add. Regroup 10 ones as 1 ten when needed.
Build the Sum
Add each pair. Think about the tens and ones in each number.
1.The cart has 27 markers and 15 crayons. How many items are there altogether? Show your tens-and-ones thinking.
2.Add 38 + 24. Write the total, then tell how many tens and ones are in the total.
3.Which sum needs regrouping? Circle one: 32 + 15 or 32 + 19. Explain how you know.
- 32 + 15
- 32 + 19
Regroup and Solve
When the ones make 10 or more, trade 10 ones for 1 ten.
4.A supply box holds 47 pencils. Someone adds 26 more. Solve 47 + 26. Show the regrouping step.
5.Solve 29 + 35. Fill in the blanks: 9 ones + 5 ones = ones = ten and ones. The total is .
6.Camila says 36 + 27 = 513 because 3 + 2 = 5 and 6 + 7 = 13. Is Camila correct? Explain the mistake and give the correct sum.
7.The cart has 28 red counters and 34 blue counters. Choose the correct total: 52, 62, or 72. Then write one sentence explaining your choice.
- 52
- 62
- 72
8.Find the missing number: 45 + ___ = 72. What number belongs in the blank?
9.Exit check: Solve 56 + 18. Write the sum and show what you did with the ones.
3 printable pages
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