Multiplying Decimals by 10 100 Worksheets - Free Printable

Let’s solve each part step by step.

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Part A: Multiply decimals by 10

When you multiply a number by 10, you move the decimal point one place to the right. If there’s no decimal point, just add a zero at the end.

Let’s go through each:

1) 0.7 × 10 → move decimal right → 7
2) 0.2 × 10 → 2
3) 10 × 0.8 → same as 0.8 × 10 → 8
4) 1.2 × 10 → 12
5) 10 × 1.5 → 15
6) 1.8 × 10 → 18
7) 10 × 1.6 → 16
8) 2.2 × 10 → 22
9) 10 × 3.1 → 31
10) 4.2 × 10 → 42
11) 10 × 2.9 → 29
12) 4.8 × 10 → 48
13) 10 × 7.3 → 73
14) 54 × 10 → add zero → 540
15) 10 × 3.7 → 37
16) 88 × 10 → 880
17) 10 × 4.7 → 47
18) 5.9 × 10 → 59
19) 10 × 7.8 → 78
20) 6.5 × 10 → 65
21) 10 × 18.4 → 184
22) 19.6 × 10 → 196
23) 10 × 25.9 → 259
24) 148 × 10 → 1480

✔ All checked — moving decimal or adding zero works every time.

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Part B: Make each number ten times bigger

Same rule — multiply by 10 → move decimal right or add zero.

1) 1.4 → 14
2) 2.6 → 26
3) 3.1 → 31
4) 4 → 40 (add zero)
5) 1.9 → 19
6) 5.5 → 55
7) 7.3 → 73
8) 69 → 690 (add zero)
9) 9.4 → 94
10) 15.1 → 151
11) 28.6 → 286
12) 54.9 → 549

✔ All correct.

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Part C: Fill in the missing numbers

We’re solving for blanks in equations involving multiplying by 10.

Remember:
If it’s “___ × 10 = answer”, divide the answer by 10 to get the blank.
If it’s “number × ___ = answer”, and we know it’s ×10, then check if answer ÷ number = 10.

Let’s go:

1) 1.3 × ___ = 13 → 13 ÷ 1.3 = 10 → 10
2) ___ × 10 = 18 → 18 ÷ 10 = 1.8 → 1.8
3) 10 × ___ = 15 → 15 ÷ 10 = 1.5 → 1.5
4) ___ × 1.9 = 19 → 19 ÷ 1.9 = 10 → 10
5) 7.5 × 10 = ___ → 75 → 75
6) ___ × 4.2 = 42 → 42 ÷ 4.2 = 10 → 10
7) 10 × ___ = 36 → 36 ÷ 10 = 3.6 → 3.6
8) ___ × 10 = 150 → 150 ÷ 10 = 15 → 15
9) 10 × ___ = 142 → 142 ÷ 10 = 14.2 → 14.2
10) ___ × 12.8 = 128 → 128 ÷ 12.8 = 10 → 10
11) 10 × ___ = 742 → 742 ÷ 10 = 74.2 → 74.2
12) ___ × 10 = 395 → 395 ÷ 10 = 39.5 → 39.5
13) 10 × ___ = 472 → 472 ÷ 10 = 47.2 → 47.2
14) ___ × 8.9 = 89 → 89 ÷ 8.9 = 10 → 10
15) 29.7 × 10 = ___ → 297 → 297

✔ All verified with division or multiplication.

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Final Answer:

A)
1) 7
2) 2
3) 8
4) 12
5) 15
6) 18
7) 16
8) 22
9) 31
10) 42
11) 29
12) 48
13) 73
14) 540
15) 37
16) 880
17) 47
18) 59
19) 78
20) 65
21) 184
22) 196
23) 259
24) 1480

B)
1) 14
2) 26
3) 31
4) 40
5) 19
6) 55
7) 73
8) 690
9) 94
10) 151
11) 286
12) 549

C)
1) 10
2) 1.8
3) 1.5
4) 10
5) 75
6) 10
7) 3.6
8) 15
9) 14.2
10) 10
11) 74.2
12) 39.5
13) 47.2
14) 10
15) 297