Math worksheet for practicing multiplication and division by 10, with problems involving decimals up to one decimal place.

Problem: Solve the worksheet "Multiply & Divide by 10 Sheet 1 (Up to 1DP)"

#### Section A: Multiply these numbers by 10
When multiplying a number by 10, you move the decimal point one place to the right.

1. \( 0.4 \times 10 = 4.0 \)
2. \( 1.2 \times 10 = 12.0 \)
3. \( 10 \times 16 = 160.0 \)
4. \( 1.9 \times 10 = 19.0 \)
5. \( 10 \times 13.5 = 135.0 \)
6. \( 0.9 \times 10 = 9.0 \)
7. \( 10 \times 28 = 280.0 \)
8. \( 25.7 \times 10 = 257.0 \)
9. \( 10 \times 46.8 = 468.0 \)

#### Section B: Divide these numbers by 10
When dividing a number by 10, you move the decimal point one place to the left.

1. \( 12 \div 10 = 1.2 \)
2. \( 90 \div 10 = 9.0 \)
3. \( 500 \div 10 = 50.0 \)
4. \( 220 \div 10 = 22.0 \)
5. \( 48 \div 10 = 4.8 \)
6. \( 143 \div 10 = 14.3 \)
7. \( 630 \div 10 = 63.0 \)
8. \( 900 \div 10 = 90.0 \)
9. \( 181 \div 10 = 18.1 \)

#### Section C: Ten times bigger or smaller. Fill in the missing numbers
- If a number is 10 times bigger than another, divide the given number by 10.
- If a number is 10 times smaller than another, multiply the given number by 10.

1. \( 70 \) is 10 times bigger than \( 7.0 \)
2. \( 12 \) is 10 times smaller than \( 120.0 \)
3. \( 0.8 \) is 10 times smaller than \( 8.0 \)
4. \( 37 \) is 10 times bigger than \( 3.7 \)
5. \( 740 \) is 10 times bigger than \( 74.0 \)
6. \( 142 \) is 10 times bigger than \( 14.2 \)
7. \( 5.2 \) is 10 times smaller than \( 52.0 \)
8. \( 9.8 \) is 10 times smaller than \( 98.0 \)

#### Section D: Multiply or divide these numbers by 10
Perform the operations as indicated.

1. \( 3.5 \times 10 = 35.0 \)
2. \( 10 \times 0.6 = 6.0 \)
3. \( 180 \div 10 = 18.0 \)
4. \( 16 \div 10 = 1.6 \)
5. \( 3.2 \times 10 = 32.0 \)
6. \( 39 \div 10 = 3.9 \)
7. \( 452 \times 10 = 4520.0 \)
8. \( 10 \times 64.8 = 648.0 \)
9. \( 527 \div 10 = 52.7 \)
10. \( 172 \div 10 = 17.2 \)
11. \( 140 \div 10 = 14.0 \)
12. \( 21.8 \times 10 = 218.0 \)
13. \( 635 \div 10 = 63.5 \)
14. \( 10 \times 34.8 = 348.0 \)
15. \( 6.2 \times 10 = 62.0 \)

Final Answer:

\[
\boxed{
\begin{array}{l}
\text{A)} \\
1. 4.0, 2. 12.0, 3. 160.0, 4. 19.0, 5. 135.0, 6. 9.0, 7. 280.0, 8. 257.0, 9. 468.0 \\
\text{B)} \\
1. 1.2, 2. 9.0, 3. 50.0, 4. 22.0, 5. 4.8, 6. 14.3, 7. 63.0, 8. 90.0, 9. 18.1 \\
\text{C)} \\
1. 7.0, 2. 120.0, 3. 8.0, 4. 3.7, 5. 74.0, 6. 14.2, 7. 52.0, 8. 98.0 \\
\text{D)} \\
1. 35.0, 2. 6.0, 3. 18.0, 4. 1.6, 5. 32.0, 6. 3.9, 7. 4520.0, 8. 648.0, 9. 52.7, 10. 17.2, 11. 14.0, 12. 218.0, 13. 63.5, 14. 348.0, 15. 62.0
\end{array}
}
\]