Is the Decimal Answer Reasonable? - Use Estimation to Check Each Answer

Sep 30, 2026

Uploaded by Bulrr

Worksheet-style practice on multiplying decimals and judging whether each computed product is reasonable. Students use estimation for several given multiplication statements, comparing each answer against an estimate to decide if it is reasonable. An answer key provides yes/no judgments for each item, reinforcing how rounding and estimation can verify decimal arithmetic without fully recalculating. Includes multiple problems numbered for systematic checking.

LanguageEnglish

CategoryExam

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Use estimation to judge reasonableness

Practice problems (1-16)

Answer key (yes/no decisions)

Is the Decimal Answer Reasonable? Name: | Use estimation to decide whether each answer is reasonable.
1) 4.6 × 68.9 = 316.94 2) 5.3 × 72.7 = 3853.1 | | | | | | | | | | Answers | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 3)
5)
7)
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15) | 7.7 × 60.1 = 462.77
8.3 × 85.3 = 70.799
9.4 × 10.9 = 102.46
2.8 × 13.9 = 3.892
1.5 × 35.8 = 53.7
2.5 × 19.7 = 4.925
6.9 × 81.3 = 56.097 | | 4) 4.3 × 27.3 = 11.739
6) 2.2 × 95.4 = 209.88
8) 1.7 × 68.9 = 1171.3
10) 5.5 × 24.3 = 133.65
12) 7.6 × 51.4 = 3906.4
14) 9.5 × 25.5 = 242.25
16) 2.4 × 33.5 = 80.4 | | | | | | | 1.
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16. | | | | | | | | Math | [www.CommonCoreSheets.com](www.CommonCoreSheets.com) | | 3 | 1-10
11-16 | 94 | 88 | 81 | 75 | 69 | 63 | 56 | 50 | 44 | 38 | | | | | | | | 31 | 25 | 19 | 13 | 6 | 0 | | | | | Is the Decimal Answer Reasonable? Name: Answer Key | Use estimation to decide whether each answer is reasonable. | | | | | | | | | Answers | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1)
3)
5) | 4.6 × 68.9 = 316.94 2) 5.3 × 72.7 = 3853.1
7.7 × 60.1 = 462.77 4) 4.3 × 27.3 = 11.739
8.3 × 85.3 = 70.799 6) 2.2 × 95.4 = 209.88 | | | | | | | | 1. yes
[2. ](2. no)[ no](2. no)
[3](3). yes
[4. ](4. no)[ no](4. no)
[5. ](5. no)[ no](5. no) | | | | | | | 7)
9) | 9.4 × 10.9 = 102.46
2.8 × 13.9 = 3.892 | | 8) 1.7 × 68.9 = 1171.3
10) 5.5 × 24.3 = 133.65 | | | | | | 6. yes
7. yes
[8. ](8. no)[ no](8. no)
[9. ](9. no)[ no](9. no)
[10](10). yes | | | | | | | 11)
13)
15) | 1.5 × 35.8
2.5 × 19.7
6.9 × 81.3 | = 53.7
= 4.925
= 56.097 | 12) 7.6 × 51.4 =
14) 9.5 × 25.5 =
16) 2.4 × 33.5 = | 3906.4
242.25
80.4 | | | | | 11. yes
[12. ](12. no)[ no](12. no)
[13. ](13. no)[ no](13. no)
[14](14). yes
[15. ](15. no)[ no](15. no)
[16](16). yes | | | | | | | | Math | [www.CommonCoreSheets.com](www.CommonCoreSheets.com 3)[ 3](www.CommonCoreSheets.com 3) | | 1-10
11-16 | 94 | 88 | 81 | 75 | 69 | 63 | 56 | 50 | 44 | 38 | | | | | | | 31 | 25 | 19 | 13 | 6 | 0 | | | | | Is the Decimal Answer Reasonable? Name: | Use estimation to decide whether each answer is reasonable.
1) 4.6 × 68.9 = 316.94 2) 5.3 × 72.7 = 3853.1
3) 7.7 × 60.1 = 462.77 4) 4.3 × 27.3 = 11.739
5) 8.3 × 85.3 = 70.799 6) 2.2 × 95.4 = 209.88
7) 9.4 × 10.9 = 102.46 8) 1.7 × 68.9 = 1171.3
9) 2.8 × 13.9 = 3.892 10) 5.5 × 24.3 = 133.65 | | | | | | | | Answers
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12. | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 11) 1.5 × 35.8 = 53.7 12) 7.6 × 51.4 = 3906.4 | | | | | | | | | | | | | | |
Math | Modified
[www.CommonCoreSheets.com](www.CommonCoreSheets.com) | 3 | 1-10
11-12 | 92 | 83 | 75 | 67 | 58 | 50 | 42 | 33 | 25 | 17 | | | | | | 8 | 0 | | | | | | | | |

FAQs

What skill does this worksheet practice?

It practices using estimation to decide whether a decimal multiplication answer is reasonable.

How should you check each multiplication problem?

Estimate the product first (by simplifying the numbers), then compare the estimate to the given decimal answer to decide yes or no.

What information is included besides the problems?

An answer key lists whether each numbered problem’s result is reasonable (yes or no).

Sep 30, 2026

Uploaded by Bulrr