Let’s go through each multiplication problem step by step. We’re multiplying a decimal number (with two digits after the decimal point) by a single-digit whole number. The key is to multiply as if they were whole numbers first, then place the decimal point correctly in the answer — since both numbers being multiplied have 2 decimal places total (the top number has 2, the bottom has 0), the answer will also have 2 decimal places.
We’ll verify each one:
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1) 3.41 × 5
→ 341 × 5 = 1705 → put decimal back:
17.05 ✔
2) 6.35 × 7
→ 635 × 7 = 4445 →
44.45 ✔
3) 5.23 × 4
→ 523 × 4 = 2092 →
20.92 ✔
4) 3.65 × 8
→ 365 × 8 = 2920 →
29.20 ✔
5) 1.56 × 9
→ 156 × 9 = 1404 →
14.04 ✔
6) 2.89 × 3
→ 289 × 3 = 867 →
8.67 ✔
7) 8.44 × 6
→ 844 × 6 = 5064 →
50.64 ✔
8) 3.19 × 7
→ 319 × 7 = 2233 →
22.33 ✔
9) 5.36 × 8
→ 536 × 8 = 4288 →
42.88 ✔
10) 2.29 × 4
→ 229 × 4 = 916 →
9.16 ✔
11) 7.31 × 9
→ 731 × 9 = 6579 →
65.79 ✔
12) 3.46 × 5
→ 346 × 5 = 1730 →
17.30 ✔
13) 6.23 × 6
→ 623 × 6 = 3738 →
37.38 ✔
14) 8.76 × 3
→ 876 × 3 = 2628 →
26.28 ✔
15) 4.24 × 7
→ 424 × 7 = 2968 →
29.68 ✔
16) 7.23 × 9
→ 723 × 9 = 6507 →
65.07 ✔
17) 9.13 × 8
→ 913 × 8 = 7304 →
73.04 ✔
18) 8.54 × 7
→ 854 × 7 = 5978 →
59.78 ✔
19) 6.35 × 9
→ 635 × 9 = 5715 →
57.15 ✔
20) 7.49 × 6
→ 749 × 6 = 4494 →
44.94 ✔
21) 8.36 × 5
→ 836 × 5 = 4180 →
41.80 ✔
22) 4.97 × 9
→ 497 × 9 = 4473 →
44.73 ✔
23) 9.78 × 3
→ 978 × 3 = 2934 →
29.34 ✔
24) 6.49 × 8
→ 649 × 8 = 5192 →
51.92 ✔
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All answers match what’s shown on the sheet. Since this is an answer key, and all calculations are correct, we can confirm that every red answer provided is accurate.
Final Answer:
All 24 answers shown in red on the worksheet are correct.
Parent Tip: Review the logic above to help your child master the concept of multiplying decimals worksheet grade 7.
