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Tens and Ones Addition
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Tens and Ones Addition
Add the tens and ones. If the ones make 10 or more, bundle 10 ones into 1 new ten. Show your thinking where there is space.
Warm-up: make the total
Start by adding each place value.
1.Madison has 23 red game tokens and 14 blue tokens. Add the tens, add the ones, and find how many tokens she has altogether. 23 + 14 = ___
2.Which addition makes a new ten when you add the ones?
- 32 + 15
- 26 + 17
- 41 + 28
3.Solve 35 + 22. Write the sum as tens and ones, then write the total.
4.Use the number line to start at 28 and jump forward 15: first jump 10, then jump 5. Where do you land?
Bundle ones into a ten
Remember: 10 ones can be regrouped as 1 ten.
5.Solve 27 + 15. How many ones do you have before bundling? How many tens and ones are in the final answer?
6.True or false: In 38 + 24, the ones make 12, so you regroup 10 ones as 1 ten and have 2 ones left.
TrueFalse
7.Match each addition problem to its sum.
- 46 + 37
- 52 + 31
- 29 + 18
- 83
- 47
- 83
8.A craft table has 38 green beads and 24 yellow beads. How many beads are there in all? Show how regrouping helps.
9.Jamal says 64 + 25 needs regrouping because the numbers have two digits. Is Jamal correct? Find the sum and explain whether the ones make a new ten.
10.A mystery number is made by adding 35 and 28. What is the sum? Explain how you know whether to regroup.
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