To solve these algebra problems, we need to find the missing number (represented by the blank line) that makes each equation true. We can do this by using inverse operations—doing the opposite math to isolate the missing number.
Left Column:
1.
14 + ___ = 28
* To find the missing number, subtract 14 from 28.
* 28 - 14 = 14.
* Answer:
14
2.
8 x ___ = 32
* To find the missing number, divide 32 by 8.
* 32 ÷ 8 = 4.
* Answer:
4
3.
26 - ___ = 8
* This one is tricky. We are taking away a number to get 8. So, the difference between 26 and the missing number is 8. We can subtract 8 from 26 to find the missing number.
* 26 - 8 = 18.
* Check: 26 - 18 = 8. Correct.
* Answer:
18
4.
42 ÷ ___ = 6
* We are dividing 42 by a number to get 6. To find that number, divide 42 by 6.
* 42 ÷ 6 = 7.
* Answer:
7
5.
15 + ___ = 33
* Subtract 15 from 33.
* 33 - 15 = 18.
* Answer:
18
6.
___ x 9 = 45
* Divide 45 by 9.
* 45 ÷ 9 = 5.
* Answer:
5
7.
___ - 20 = 30
* We are starting with a number, taking away 20, and ending up with 30. So, we need to add 20 back to 30.
* 30 + 20 = 50.
* Answer:
50
8.
___ ÷ 4 = 6
* We are dividing a number by 4 to get 6. To find the original number, multiply 6 by 4.
* 6 x 4 = 24.
* Answer:
24
9.
___ + 25 = 50
* Subtract 25 from 50.
* 50 - 25 = 25.
* Answer:
25
10.
___ x 8 = 24
* Divide 24 by 8.
* 24 ÷ 8 = 3.
* Answer:
3
Right Column:
1.
22 + ___ = 40
* Subtract 22 from 40.
* 40 - 22 = 18.
* Answer:
18
2.
5 x ___ = 30
* Divide 30 by 5.
* 30 ÷ 5 = 6.
* Answer:
6
3.
58 - ___ = 40
* Subtract 40 from 58.
* 58 - 40 = 18.
* Answer:
18
4.
22 ÷ ___ = 11
* Divide 22 by 11.
* 22 ÷ 11 = 2.
* Answer:
2
5.
23 + ___ = 46
* Subtract 23 from 46.
* 46 - 23 = 23.
* Answer:
23
6.
___ x 6 = 36
* Divide 36 by 6.
* 36 ÷ 6 = 6.
* Answer:
6
7.
___ - 15 = 30
* Add 15 to 30.
* 30 + 15 = 45.
* Answer:
45
8.
___ ÷ 4 = 10
* Multiply 10 by 4.
* 10 x 4 = 40.
* Answer:
40
9.
___ + 60 = 100
* Subtract 60 from 100.
* 100 - 60 = 40.
* Answer:
40
10.
___ x 3 = 27
* Divide 27 by 3.
* 27 ÷ 3 = 9.
* Answer:
9
Final Answer:
Left Column Answers:
1. 14
2. 4
3. 18
4. 7
5. 18
6. 5
7. 50
8. 24
9. 25
10. 3
Right Column Answers:
1. 18
2. 6
3. 18
4. 2
5. 23
6. 6
7. 45
8. 40
9. 40
10. 9
Parent Tip: Review the logic above to help your child master the concept of math worksheet for grade 4.
