Let’s solve the “Missing Numbers (B) With Number Line” worksheet step by step.
The goal is to
fill in the missing boxes to make each subtraction equation true.
We are given a number line from 1 to 40 on the right side — this can help visualize the problems, but we can also solve them with basic arithmetic.
---
Let’s go row by row:
#### Left Column:
1.
34 – ___ = 29
→ What number subtracted from 34 gives 29?
→ 34 – 29 =
5
✔ Answer:
5
2.
28 – ___ = 15
→ 28 – 15 =
13
✔ Answer:
13
3.
22 – ___ = 6
→ 22 – 6 =
16
✔ Answer:
16
4.
17 – ___ = 9
→ 17 – 9 =
8
✔ Answer:
8
5.
40 – ___ = 32
→ 40 – 32 =
8
✔ Answer:
8
6.
36 – ___ = 13
→ 36 – 13 =
23
✔ Answer:
23
7.
38 – ___ = 38
→ 38 – 38 =
0
✔ Answer:
0
---
#### Right Column:
8.
___ – 7 = 22
→ What number minus 7 equals 22?
→ 22 + 7 =
29
✔ Answer:
29
9.
___ – 14 = 14
→ 14 + 14 =
28
✔ Answer:
28
10.
___ – 2 = 35
→ 35 + 2 =
37
✔ Answer:
37
11.
___ – 10 = 26
→ 26 + 10 =
36
✔ Answer:
36
12.
___ – 12 = 9
→ 9 + 12 =
21
✔ Answer:
21
13.
___ – 15 = 17
→ 17 + 15 =
32
✔ Answer:
32
14.
___ – 33 = 6
→ 6 + 33 =
39
✔ Answer:
39
---
Final Answers (Left to Right, Top to Bottom):
Left Column:
- 5
- 13
- 16
- 8
- 8
- 23
- 0
Right Column:
- 29
- 28
- 37
- 36
- 21
- 32
- 39
---
✔ All equations are now true!
You can check any of them using the number line if needed — for example, for 34 – 5 = 29, start at 34 and count back 5 steps to land on 29.
This worksheet helps build understanding of
inverse operations (addition and subtraction are opposites) and reinforces
number sense within 40.
Let me know if you’d like a printable version or explanation using the number line visually!
Parent Tip: Review the logic above to help your child master the concept of find the missing number worksheet 2nd grade.
