To solve these multiplication problems, we multiply each decimal number by the given single-digit number. Since all decimals have two decimal places (hundredths), the result will also have two decimal places.
Let’s go step by step for each problem:
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1) 1.21 × 3
Multiply 121 × 3 = 363
Place decimal back → 3.63
2) 2.32 × 5
232 × 5 = 1160 → 11.60 → simplify to 11.6
3) 4.16 × 2
416 × 2 = 832 → 8.32
4) 3.24 × 3
324 × 3 = 972 → 9.72
5) 1.07 × 4
107 × 4 = 428 → 4.28
6) 3.54 × 2
354 × 2 = 708 → 7.08
7) 6.23 × 3
623 × 3 = 1869 → 18.69
8) 5.11 × 5
511 × 5 = 2555 → 25.55
9) 4.24 × 4
424 × 4 = 1696 → 16.96
10) 1.57 × 5
157 × 5 = 785 → 7.85
11) 6.34 × 2
634 × 2 = 1268 → 12.68
12) 2.81 × 3
281 × 3 = 843 → 8.43
13) 4.63 × 4
463 × 4 = 1852 → 18.52
14) 6.75 × 2
675 × 2 = 1350 → 13.50 → simplify to 13.5
15) 5.27 × 5
527 × 5 = 2635 → 26.35
16) 6.48 × 4
648 × 4 = 2592 → 25.92
17) 9.84 × 3
984 × 3 = 2952 → 29.52
18) 7.39 × 5
739 × 5 = 3695 → 36.95
19) 8.66 × 2
866 × 2 = 1732 → 17.32
20) 5.77 × 4
577 × 4 = 2308 → 23.08
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Final Answer:
1) 3.63
2) 11.6
3) 8.32
4) 9.72
5) 4.28
6) 7.08
7) 18.69
8) 25.55
9) 16.96
10) 7.85
11) 12.68
12) 8.43
13) 18.52
14) 13.5
15) 26.35
16) 25.92
17) 29.52
18) 36.95
19) 17.32
20) 23.08
Parent Tip: Review the logic above to help your child master the concept of free 5th grade math worksheets.
