This worksheet provides three levels of difficulty to help students practice multiplying whole numbers by 100.

Problem: Solving the Multiplying by 100 Worksheet

The worksheet is divided into three sections: A, B, and C. Each section involves multiplication by 100 or related concepts. Let's solve each part step by step.

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Section A: Work out these multiplications

#### Instructions:
Multiply each number by 100.

#### Solutions:
1. \( 16 \times 100 = 1600 \)
2. \( 25 \times 100 = 2500 \)
3. \( 100 \times 17 = 1700 \)
4. \( 9 \times 100 = 900 \)
5. \( 100 \times 31 = 3100 \)
6. \( 43 \times 100 = 4300 \)
7. \( 100 \times 14 = 1400 \)
8. \( 56 \times 100 = 5600 \)
9. \( 100 \times 38 = 3800 \)
10. \( 53 \times 100 = 5300 \)
11. \( 100 \times 76 = 7600 \)
12. \( 88 \times 100 = 8800 \)
13. \( 100 \times 37 = 3700 \)
14. \( 80 \times 100 = 8000 \)
15. \( 100 \times 64 = 6400 \)
16. \( 95 \times 100 = 9500 \)
17. \( 100 \times 68 = 6800 \)
18. \( 39 \times 100 = 3900 \)
19. \( 100 \times 74 = 7400 \)
20. \( 48 \times 100 = 4800 \)
21. \( 100 \times 92 = 9200 \)
22. \( 50 \times 100 = 5000 \)
23. \( 100 \times 75 = 7500 \)
24. \( 99 \times 100 = 9900 \)

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Section B: Make each of these numbers 100 times bigger

#### Instructions:
Multiply each given number by 100.

#### Solutions:
1. \( 36 \rightarrow 3600 \)
2. \( 9 \rightarrow 900 \)
3. \( 85 \rightarrow 8500 \)
4. \( 30 \rightarrow 3000 \)
5. \( 74 \rightarrow 7400 \)
6. \( 47 \rightarrow 4700 \)
7. \( 49 \rightarrow 4900 \)
8. \( 123 \rightarrow 12300 \)
9. \( 161 \rightarrow 16100 \)
10. \( 128 \rightarrow 12800 \)
11. \( 214 \rightarrow 21400 \)
12. \( 327 \rightarrow 32700 \)

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Section C: Fill in the missing numbers

#### Instructions:
Solve for the missing numbers in each equation.

#### Solutions:
1. \( 62 \times 100 = 6200 \)
The missing number is \( 100 \).

2. \( 29 \times 100 = 2900 \)
The missing number is \( 29 \).

3. \( 100 \times 34 = 3400 \)
The missing number is \( 34 \).

4. \( 100 \times 55 = 5500 \)
The missing number is \( 100 \).

5. \( 36 \times 100 = 3600 \)
The missing number is \( 3600 \).

6. \( 100 \times 71 = 7100 \)
The missing number is \( 100 \).

7. \( 100 \times 7 = 700 \)
The missing number is \( 7 \).

8. \( 94 \times 100 = 9400 \)
The missing number is \( 94 \).

9. \( 100 \times 78 = 7800 \)
The missing number is \( 78 \).

10. \( 100 \times 66 = 6600 \)
The missing number is \( 100 \).

11. \( 100 \times 49 = 4900 \)
The missing number is \( 49 \).

12. \( 97 \times 100 = 9700 \)
The missing number is \( 97 \).

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Final Answers:

- Section A:
1. 1600, 2. 2500, 3. 1700, 4. 900, 5. 3100, 6. 4300, 7. 1400, 8. 5600, 9. 3800, 10. 5300, 11. 7600, 12. 8800, 13. 3700, 14. 8000, 15. 6400, 16. 9500, 17. 6800, 18. 3900, 19. 7400, 20. 4800, 21. 9200, 22. 5000, 23. 7500, 24. 9900

- Section B:
1. 3600, 2. 900, 3. 8500, 4. 3000, 5. 7400, 6. 4700, 7. 4900, 8. 12300, 9. 16100, 10. 12800, 11. 21400, 12. 32700

- Section C:
1. 100, 2. 29, 3. 34, 4. 100, 5. 3600, 6. 100, 7. 7, 8. 94, 9. 78, 10. 100, 11. 49, 12. 97

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Boxed Final Answer:

\[
\boxed{
\begin{array}{l}
\text{Section A: } 1600, 2500, 1700, 900, 3100, 4300, 1400, 5600, 3800, 5300, 7600, 8800, 3700, 8000, 6400, 9500, 6800, 3900, 7400, 4800, 9200, 5000, 7500, 9900 \\
\text{Section B: } 3600, 900, 8500, 3000, 7400, 4700, 4900, 12300, 16100, 12800, 21400, 32700 \\
\text{Section C: } 100, 29, 34, 100, 3600, 100, 7, 94, 78, 100, 49, 97
\end{array}
}
\]