Explanation:
We need to multiply each decimal number (with one decimal place) by a single-digit whole number. The key is to ignore the decimal at first, multiply as if both numbers are whole, then put the decimal back in the correct place.
Rule: When multiplying a number with
one decimal place by a whole number, the answer will also have
one decimal place.
Let’s do a few examples step by step to show how:
1) 14.2 × 6
→ Think of 142 × 6 = 852
→ Since 14.2 has one decimal place, the answer is
85.2
2) 32.5 × 5
→ 325 × 5 = 1625
→ One decimal place →
162.5
3) 21.3 × 7
→ 213 × 7 = 1491
→ →
149.1
4) 12.1 × 9
→ 121 × 9 = 1089
→ →
108.9
5) 16.3 × 8
→ 163 × 8 = 1304
→ →
130.4
6) 24.3 × 7
→ 243 × 7 = 1701
→ →
170.1
7) 57.6 × 3
→ 576 × 3 = 1728
→ →
172.8
8) 32.4 × 6
→ 324 × 6 = 1944
→ →
194.4
9) 22.5 × 9
→ 225 × 9 = 2025
→ →
202.5
10) 38.6 × 8
→ 386 × 8 = 3088
→ →
308.8
11) 92.7 × 4
→ 927 × 4 = 3708
→ →
370.8
12) 41.3 × 7
→ 413 × 7 = 2891
→ →
289.1
13) 38.3 × 6
→ 383 × 6 = 2298
→ →
229.8
14) 55.2 × 9
→ 552 × 9 = 4968
→ →
496.8
15) 61.7 × 7
→ 617 × 7 = 4319
→ →
431.9
16) 62.6 × 5
→ 626 × 5 = 3130
→ →
313.0 (or just 313 — but since original had one decimal, we keep .0)
17) 18.7 × 9
→ 187 × 9 = 1683
→ →
168.3
18) 37.2 × 8
→ 372 × 8 = 2976
→ →
297.6
19) 48.1 × 6
→ 481 × 6 = 2886
→ →
288.6
20) 53.4 × 7
→ 534 × 7 = 3738
→ →
373.8
21) 56.4 × 4
→ 564 × 4 = 2256
→ →
225.6
22) 78.3 × 8
→ 783 × 8 = 6264
→ →
626.4
23) 49.7 × 6
→ 497 × 6 = 2982
→ →
298.2
24) 94.6 × 3
→ 946 × 3 = 2838
→ →
283.8
Let me double-check a few tricky ones:
- #16: 62.6 × 5
60 × 5 = 300
2.6 × 5 = 13
Total = 313 → yes, 313.0 ✔️
- #22: 78.3 × 8
78 × 8 = 624
0.3 × 8 = 2.4
624 + 2.4 = 626.4 ✔️
All look correct.
Final Answer:
1) 85.2
2) 162.5
3) 149.1
4) 108.9
5) 130.4
6) 170.1
7) 172.8
8) 194.4
9) 202.5
10) 308.8
11) 370.8
12) 289.1
13) 229.8
14) 496.8
15) 431.9
16) 313.0
17) 168.3
18) 297.6
19) 288.6
20) 373.8
21) 225.6
22) 626.4
23) 298.2
24) 283.8
Parent Tip: Review the logic above to help your child master the concept of decimal worksheets 5th grade.
