Breaking Apart Tens and Ones

Sep 30, 2026

Uploaded by Jiven

Math worksheet focused on completing number sentences by breaking apart tens and ones. Students fill in missing addends so that equations like 18 = 8 + _, 13 = _ + 3, and 15 = _ + 10 become correct. A separate answer key provides the completed results for problems 1 through 18, supporting self-check and review. Designed for practice with basic addition using tens-and-ones decomposition.

LanguageEnglish

CategoryExam

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Fill in the blank practice

Number sentences 1-18

Answer key

Breaking Apart Tens and Ones Name: | Fill in the blank with the correct number. | | | | | | | | | Answers | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1) | 18 = 8 + 2) 13 = | | + 3 | | | | | | | | | | | | | | 3)
5) | 12 = 2 + 4) 16 =
17 = 10 + 6) 15 = | | + 6
+ 5 | | | | | | 1.
2.
3.
4.
5. | | | | | | | | 7) | 14 = 4 + 8) 11 = | | + 10 | | | | | | 6.
7. | | | | | | | | 9) | 19 = 9 + 10) 15 = | | + 10 | | | | | | 8.
9. | | | | | | | | 11) | 18 = 8 + 12) 16 = | | + 10 | | | | | | 10.
11. | | | | | | | | 13)
15)
17) | 12 = 2 +
19 = 9 +
11 = 10 + | 14) 14 =
16) 13 =
18) 17 = | + 10
+ 3
+ 10 | | | | | | 12.
13.
14.
15.
16.
17.
18. | | | | | | | | | Math
[www.CommonCoreSheets.com](www.CommonCoreSheets.com) | | 5 | 1-10
11-18 | 94 | 89 | 83 | 78 | | 72 | 67 | 61 | 56 | 50 | 44 | | | | | | | 39 | 33 | 28 | 22 | | 17 | 11 | 6 | 0 | | | Breaking Apart Tens and Ones Name: Answer Key | Fill in the blank with the correct number.
1) 18 = 8 + 10
3) 12 = 2 + 10
5) 17 = 10 + 7 | 2)
4)
6) | 13 =
16 =
15 = | 10 + 3
10 + 6
10 + 5 | 1.
2.
3.
4.
5. | Answers | | --- | --- | --- | --- | --- | --- | | | | | | | 10 | | | | | | | 10 | | | | | | | 10 | | | | | | | 10 | | | | | | | 7 | | | | | | | | | 7) 14 = 4 + 10 | 8) | 11 = | 1 + 10 | 6.
7. | 10 | | | | | | | 10 | | | | | | | | | 9) 19 = 9 + 10 | 10) | 15 = | 5 + 10 | 8.
9. | 1 | | | | | | | 10 | | | | | | | | | 11) 18 = 8 + 10
13) 12 = 2 + 10
15) 19 = 9 + 10
17) 11 = 10 + 1 | 12)
14)
16)
18) | 16 =
14 =
13 =
17 = | 6 + 10
4 + 10
10 + 3
7 + 10 | 10.
11.
12.
13.
14.
15.
16.
17.
18. | 5 | | | | | | | 10 | | | | | | | 6 | | | | | | | 10 | | | | | | | 4 | | | | | | | 10 | | | | | | | 10 | | | | | | | 1 | | | | | | | 7 | | | | | | | | Math [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 5 Breaking Apart Tens and Ones Name: Fill in the blank with the correct number. 10 5 10 10 6 10 10 10 1 10 10 7 1) 18 = 8 + 2) 13 = + 3 3) 12 = 2 + 4) 16 = + 6 5) 17 = 10 + 6) 15 = + 5 7) 14 = 4 + 8) 11 = + 10 9) 19 = 9 + 10) 15 = + 10 11) 18 = 8 + 12) 16 = + 10 Answers 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Math Modified [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 5 1-10 92 11-12 8 83 0 75 67 58 50 42 33 25 17

FAQs

What skill does the worksheet practice?

It practices decomposing numbers into tens and ones to make correct addition equations.

How should students complete the problems?

Students fill in the missing addend in each equation so the total matches the given number.

Is there an answer key included?

Yes. The document includes a separate answer key listing the correct answers for the problems.

Sep 30, 2026

Uploaded by Jiven