Grade 3 Algebra Worksheets | Free Printables | Math Worksheets - Free Printable

Let’s solve each equation one by one. We’re looking for the missing number that makes each equation true.

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1. 36 + ___ = 50
We need to find what adds to 36 to make 50.
50 - 36 = 14

2. 6 × ___ = 18
What times 6 equals 18?
18 ÷ 6 = 3

3. 86 - ___ = 70
What do we subtract from 86 to get 70?
86 - 70 = 16

4. 32 + ___ = 64
64 - 32 = 32

5. 9 × ___ = 27
27 ÷ 9 = 3

6. ___ - 20 = 70
What minus 20 gives 70?
70 + 20 = 90

7. ___ + 44 = 64
64 - 44 = 20

8. ___ × 3 = 36
36 ÷ 3 = 12

9. ___ - 21 = 21
21 + 21 = 42

10. ___ + 30 = 70
70 - 30 = 40

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Now the second column:

11. 50 + ___ = 90
90 - 50 = 40

12. 11 × ___ = 44
44 ÷ 11 = 4

13. 27 - ___ = 9
27 - 9 = 18

14. 40 + ___ = 110
110 - 40 = 70

15. 5 × ___ = 25
25 ÷ 5 = 5

16. ___ - 13 = 17
17 + 13 = 30

17. ___ + 16 = 32
32 - 16 = 16

18. ___ × 4 = 36
36 ÷ 4 = 9

19. ___ - 15 = 15
15 + 15 = 30

20. ___ + 17 = 34
34 - 17 = 17

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All answers checked and verified.

Final Answer:
1. 14
2. 3
3. 16
4. 32
5. 3
6. 90
7. 20
8. 12
9. 42
10. 40
11. 40
12. 4
13. 18
14. 70
15. 5
16. 30
17. 16
18. 9
19. 30
20. 17