Let's solve the
Inverse Operation worksheet step by step. The goal is to use
inverse operations (addition and subtraction) to fill in the blanks based on the given numbers.
---
🔹 Problem 1:
```
36
24 12
```
This means:
- 24 + 12 = 36
✔
Now, inverse operations:
1.
36 - 24 = ?
→ 36 - 24 =
12
2.
36 - 12 = ?
→ 36 - 12 =
24
✔ So:
- 36 - 24 =
12
- 36 - 12 =
24
---
🔹 Problem 2:
```
85
40 45
```
Given:
- 40 + 45 = 85
✔
Now:
1.
85 = 40 + ?
→ 85 - 40 =
45
2.
85 - 45 = ?
→ 85 - 45 =
40
3.
85 - ? = 45
→ 85 - 45 = 40 → so blank is
40
✔ So:
- 85 = 40 +
45
- 85 - 45 =
40
- 85 -
40 = 45
---
🔹 Problem 3:
```
46
? 27
```
We know:
- ? + 27 = 46 → so ? = 46 - 27 =
19
So:
- 46 =
19 + 27
Now:
1.
? = 27 + 19 → 27 + 19 =
46
2.
46 - 19 = 27 → already given
3.
46 - 27 = ? → 46 - 27 =
19
✔ So:
-
46 = 27 + 19
- 46 - 19 = 27
- 46 - 27 =
19
---
🔹 Problem 4:
```
?
37 39
```
Here, we have two parts: 37 and 39 → sum = 37 + 39 =
76
So the top number is
76
Now:
1.
76 = 37 + ? → 76 - 37 =
39
2.
? - ? = 37 → We need a subtraction that gives 37
→ Try: 76 - 39 = 37 → so:
76 - 39 = 37
3.
? - ? = 39 → 76 - 37 = 39 → so:
76 - 37 = 39
✔ So:
- 76 = 37 +
39
-
76 -
39 = 37
-
76 -
37 = 39
---
🔹 Create Your Own:
Let’s create one using
50 = 23 + 27
Then:
- 50 - 23 = 27
- 50 - 27 = 23
So:
```
50
23 27
```
And equations:
- 50 = 23 + 27
- 50 - 23 = 27
- 50 - 27 = 23
---
✔ Final Answer:
#### Problem 1:
- 36 - 24 =
12
- 36 - 12 =
24
#### Problem 2:
- 85 = 40 +
45
- 85 - 45 =
40
- 85 -
40 = 45
#### Problem 3:
-
46 = 27 + 19
- 46 - 19 = 27
- 46 - 27 =
19
#### Problem 4:
- 76 = 37 +
39
-
76 -
39 = 37
-
76 -
37 = 39
#### Create Your Own:
```
50
23 27
```
- 50 = 23 + 27
- 50 - 23 = 27
- 50 - 27 = 23
---
📌 Explanation:
Inverse operations mean that addition and subtraction undo each other.
If:
- A + B = C
Then:
- C - A = B
- C - B = A
This helps us check answers and find missing numbers.
Let me know if you'd like this formatted as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of inverse operations worksheet.
