Sure! Let’s solve each equation step by step. The goal is to find the missing number (represented by the blank “___”) that makes each equation true.
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Equation 1: 20 + ___ = 40
To find the missing number, subtract 20 from 40:
> 40 - 20 =
20
✔ Answer:
20
---
Equation 2: 4 × ___ = 16
Divide 16 by 4:
> 16 ÷ 4 =
4
✔ Answer:
4
---
Equation 3: 37 - ___ = 25
Subtract 25 from 37:
> 37 - 25 =
12
✔ Answer:
12
---
Equation 4: 18 + ___ = 30
Subtract 18 from 30:
> 30 - 18 =
12
✔ Answer:
12
---
Equation 5: 6 × ___ = 24
Divide 24 by 6:
> 24 ÷ 6 =
4
✔ Answer:
4
---
Equation 6: ___ - 10 = 50
Add 10 to 50:
> 50 + 10 =
60
✔ Answer:
60
---
Equation 7: ___ + 25 = 50
Subtract 25 from 50:
> 50 - 25 =
25
✔ Answer:
25
---
Equation 8: ___ × 4 = 16
Divide 16 by 4:
> 16 ÷ 4 =
4
✔ Answer:
4
---
Equation 9: ___ - 12 = 24
Add 12 to 24:
> 24 + 12 =
36
✔ Answer:
36
---
Equation 10: ___ + 60 = 80
Subtract 60 from 80:
> 80 - 60 =
20
✔ Answer:
20
---
Equation 11: 40 + ___ = 80
Subtract 40 from 80:
> 80 - 40 =
40
✔ Answer:
40
---
Equation 12: 5 × ___ = 35
Divide 35 by 5:
> 35 ÷ 5 =
7
✔ Answer:
7
---
Equation 13: 35 - ___ = 20
Subtract 20 from 35:
> 35 - 20 =
15
✔ Answer:
15
---
Equation 14: 35 + ___ = 70
Subtract 35 from 70:
> 70 - 35 =
35
✔ Answer:
35
---
Equation 15: 11 × ___ = 66
Divide 66 by 11:
> 66 ÷ 11 =
6
✔ Answer:
6
---
Equation 16: ___ - 30 = 30
Add 30 to 30:
> 30 + 30 =
60
✔ Answer:
60
---
Equation 17: ___ + 18 = 48
Subtract 18 from 48:
> 48 - 18 =
30
✔ Answer:
30
---
Equation 18: ___ × 7 = 21
Divide 21 by 7:
> 21 ÷ 7 =
3
✔ Answer:
3
---
Equation 19: ___ - 20 = 40
Add 20 to 40:
> 40 + 20 =
60
✔ Answer:
60
---
Equation 20: ___ + 13 = 26
Subtract 13 from 26:
> 26 - 13 =
13
✔ Answer:
13
---
##
✔ Final Answers:
1.
20
2.
4
3.
12
4.
12
5.
4
6.
60
7.
25
8.
4
9.
36
10.
20
11.
40
12.
7
13.
15
14.
35
15.
6
16.
60
17.
30
18.
3
19.
60
20.
13
---
💡
Tip: For equations like `A + ___ = B`, use `B - A`.
For `A × ___ = B`, use `B ÷ A`.
For `___ - A = B`, use `B + A`.
Let me know if you’d like a printable version or explanation for a specific problem!
Parent Tip: Review the logic above to help your child master the concept of math worksheets for grade 3.
