Find the Missing Number in the Multiplication - Worksheet 2 - Your ... - Free Printable

Let's solve each problem in the worksheet "Multiplying By Whole Tens" step by step. The goal is to find the missing number in each multiplication equation.

We'll use the formula:

> If $ a \times b = c $, then $ b = \frac{c}{a} $

We’ll solve each equation one at a time.

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Left Column:

1. $ 30 \times \boxed{} = 1800 $
$ \boxed{} = \frac{1800}{30} = 60 $

2. $ \boxed{} \times 40 = 400 $
$ \boxed{} = \frac{400}{40} = 10 $

3. $ 30 \times \boxed{} = 900 $
$ \boxed{} = \frac{900}{30} = 30 $

4. $ \boxed{} \times 90 = 2700 $
$ \boxed{} = \frac{2700}{90} = 30 $

5. $ 70 \times \boxed{} = 3500 $
$ \boxed{} = \frac{3500}{70} = 50 $

6. $ \boxed{} \times 70 = 4900 $
$ \boxed{} = \frac{4900}{70} = 70 $

7. $ 10 \times \boxed{} = 300 $
$ \boxed{} = \frac{300}{10} = 30 $

8. $ \boxed{} \times 20 = 1400 $
$ \boxed{} = \frac{1400}{20} = 70 $

9. $ 10 \times \boxed{} = 500 $
$ \boxed{} = \frac{500}{10} = 50 $

10. $ \boxed{} \times 20 = 1600 $
$ \boxed{} = \frac{1600}{20} = 80 $

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Right Column:

11. $ \boxed{} \times 30 = 1200 $
$ \boxed{} = \frac{1200}{30} = 40 $

12. $ 10 \times \boxed{} = 600 $
$ \boxed{} = \frac{600}{10} = 60 $

13. $ \boxed{} \times 60 = 1200 $
$ \boxed{} = \frac{1200}{60} = 20 $

14. $ 10 \times \boxed{} = 900 $
$ \boxed{} = \frac{900}{10} = 90 $

15. $ \boxed{} \times 40 = 800 $
$ \boxed{} = \frac{800}{40} = 20 $

16. $ 20 \times \boxed{} = 600 $
$ \boxed{} = \frac{600}{20} = 30 $

17. $ \boxed{} \times 60 = 3600 $
$ \boxed{} = \frac{3600}{60} = 60 $

18. $ 60 \times \boxed{} = 5400 $
$ \boxed{} = \frac{5400}{60} = 90 $

19. $ \boxed{} \times 70 = 5600 $
$ \boxed{} = \frac{5600}{70} = 80 $

20. $ 90 \times \boxed{} = 4500 $
$ \boxed{} = \frac{4500}{90} = 50 $

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✔ Final Answers (in order):

Left Column:
1. 60
2. 10
3. 30
4. 30
5. 50
6. 70
7. 30
8. 70
9. 50
10. 80

Right Column:
11. 40
12. 60
13. 20
14. 90
15. 20
16. 30
17. 60
18. 90
19. 80
20. 50

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📌 Explanation:

Each problem involves multiplying a whole ten (like 10, 20, 30, etc.) by another number to get a product. To find the missing number, we divide the product by the known factor. This uses basic division and understanding of place value, especially since all numbers are multiples of tens.

For example:
- $ 30 \times ? = 1800 $ → Think: How many times does 30 go into 1800?
$ 1800 ÷ 30 = 60 $

This kind of practice helps build fluency with multiplication and division involving multiples of 10.

Let me know if you'd like this formatted as a printable answer key!