Deciding if a Fraction Answer is Reasonable - Use estimation to decide if each answer is reasonable

Sep 30, 2026

Upload by Sarah

Worksheet instruction set requiring students to use estimation to judge whether given fraction-sum or fraction-addition equations produce reasonable answers. Eighteen problems pair two fractions and ask whether the proposed resulting fraction is reasonable, requiring yes or no responses. An answer key section provides the expected yes/no outcomes for each item. The task focuses on fraction size estimation, comparison, and quick reasonableness checks rather than exact computation.

LanguageEnglish

CategoryExam

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Problems

Reasonableness checks (1–18)

Deciding if a Fraction Answer is Reasonable Name: | Use estimation to decide if each answer is reasonable. Use yes or no.
1) 1⁄ 16 + 7⁄ 8 = 15⁄ 16 2) 3⁄ 4 + 3⁄ 4 = 3⁄ 4 3) 7⁄ 16 + 1⁄ 6 = 29⁄ 48
4) 7⁄ 10 + 9⁄ 10 = 8⁄ 5 5) 3⁄ 4 + 1⁄ 5 = 4⁄ 9 6) 1⁄ 6 + 5⁄ 6 = 1⁄ 2
7) 2⁄ 5 + 1⁄ 2 = 9⁄ 10 8) 2⁄ 5 + 4⁄ 5 = 6⁄ 5 9) 1⁄ 2 + 5⁄ 16 = 1⁄ 3
10) 5⁄ 12 + 11⁄ 12 = 4⁄ 3 11) 1⁄ 3 + 5⁄ 6 = 2⁄ 3 12) 2⁄ 5 + 2⁄ 5 = 4⁄ 5
13) 1⁄ 12 + 3⁄ 5 = 4⁄ 17 14) 3⁄ 8 + 3⁄ 8 = 3⁄ 4 15) 7⁄ 8 + 7⁄ 12 = 7⁄ 10
16) 3⁄ 8 + 7⁄ 8 = 5⁄ 8 17) 1⁄ 12 + 3⁄ 5 = 41⁄ 60 18) 9⁄ 10 + 7⁄ 10 = 4⁄ 5 | | | | | | | | Answers
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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 | | | Deciding if a Fraction Answer is Reasonable Name: Answer Key | Use estimation to decide if each answer is reasonable. Use yes or no. | | | | | | | | | Answers | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1)
4)
7)
10) | 1 7 15 ⁄ 16 + ⁄ 8 = ⁄ 16
7 9 8 ⁄ 10 + ⁄ 10 = ⁄ 5
2 1 9 ⁄ 5 + ⁄ 2 = ⁄ 10
5 11 4 ⁄ 12 + ⁄ 12 = ⁄ 3 | 2) 3⁄ 4 + 3⁄ 4 = 3⁄ 4
5) 3⁄ 4 + 1⁄ 5 = 4⁄ 9
8) 2⁄ 5 + 4⁄ 5 = 6⁄ 5
11) 1⁄ 3 + 5⁄ 6 = 2⁄ 3 | 3)
6)
9)
12) | 7 1 29 ⁄ 16 + ⁄ 6 = ⁄ 48
1 5 1 ⁄ 6 + ⁄ 6 = ⁄ 2
1 5 1 ⁄ 2 + ⁄ 16 = ⁄ 3
2 2 4 ⁄ 5 + ⁄ 5 = ⁄ 5 | | | | | 1. yes
[2. ](2. no)[ no](2. no)
[3](3). yes
4. yes
[5. ](5. no)[ no](5. no)
[6. ](6. no)[ no](6. no)
[7](7). yes
8. yes
[9. ](9. no)[ no](9. no)
[10](10). yes | | | | | | | | 13)
16) | 1 3 4 ⁄ 12 + ⁄ 5 = ⁄ 17
3 7 5 ⁄ 8 + ⁄ 8 = ⁄ 8 | 14) 3⁄ 8 + 3⁄ 8 = 3⁄ 4
17) 1⁄ 12 + 3⁄ 5 = 41⁄ 60 | 15)
18) | 7 7 7 ⁄ 8 + ⁄ 12 = ⁄ 10
9 7 4 ⁄ 10 + ⁄ 10 = ⁄ 5 | | | | | [11. ](11. no)[ no](11. no)
[12](12). yes
[13. ](13. no)[ no](13. no)
[14](14). yes
[15. ](15. no)[ no](15. no)
[16. ](16. no)[ no](16. no)
[17](17). yes
[18. ](18. no)[ no](18. no) | | | | | | | | | 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 | | | Deciding if a Fraction Answer is Reasonable Name: | Use estimation to decide if each answer is reasonable. Use yes or no. | | | | | | | | | | Answers | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1)
4) | 1 7 15 ⁄ 16 + ⁄ 8 = ⁄ 16
7 9 8 ⁄ 10 + ⁄ 10 = ⁄ 5 | | 2) 3⁄ 4 + 3⁄ 4 = 3⁄ 4
5) 3⁄ 4 + 1⁄ 5 = 4⁄ 9 | 3)
6) | 7 1 29 ⁄ 16 + ⁄ 6 = ⁄ 48
1 5 1 ⁄ 6 + ⁄ 6 = ⁄ 2 | | | | | 1.
2.
3.
4.
5. | | | | | | | 7) | 2⁄ 5 + 1⁄ 2 = 9⁄ 10 8) 2⁄ 5 + 4⁄ 5 = 6⁄ 5 | | | 9) | 1 5 1 ⁄ 2 + ⁄ 16 = ⁄ 3 | | | | | 6.
7.
8.
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10. | | | | | | | 10) | 5⁄ 12 + 11⁄ 12 = 4⁄ 3 11) 1⁄ 3 + 5⁄ 6 = 2⁄ 3 | | | 12) | 2 2 4 ⁄ 5 + ⁄ 5 = ⁄ 5 | | | | | 11.
12. | | | | | | | | Math | Modified
[www.CommonCoreSheets.com](www.CommonCoreSheets.com) | | 5 | 1-10
11-12 | 92 | 83 | 75 | 67 | 58 | 50 | 42 | 33 | 25 | 17 | | | | | | | | 8 | 0 | | | | | | | | |

FAQs

What does the worksheet ask you to do for each fraction problem?

Use estimation to decide if the given fraction answer is reasonable. Respond with yes or no for each equation.

How many fraction equations are included?

There are 18 problems, labeled 1) through 18).

Where can you find the correct yes/no results?

The document includes an answer key section listing which answers are yes or no for each problem.

Sep 30, 2026

Upload by Sarah