Adding Positive and Negative Numbers Worksheet for 5th - 8th Grade ... - Free Printable

Let’s solve each problem step by step. We’re adding positive and negative numbers — think of it like moving on a number line:
- Positive = move right
- Negative = move left

We’ll go one by one.

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1) 5 + (-2)
Start at 5, move 2 left → 3
✔ Answer: 3

2) -4 + 7
Start at -4, move 7 right → 3
✔ Answer: 3

3) -8 + (-6)
Start at -8, move 6 more left → -14
✔ Answer: -14

4) 9 + (-10)
Start at 9, move 10 left → -1
✔ Answer: -1

5) -10 + 10
Start at -10, move 10 right → 0
✔ Answer: 0

6) -12 + (-8)
Start at -12, move 8 left → -20
✔ Answer: -20

7) 15 + (-14)
Start at 15, move 14 left → 1
✔ Answer: 1

8) -16 + 18
Start at -16, move 18 right → 2
✔ Answer: 2

9) -20 + (-5)
Start at -20, move 5 left → -25
✔ Answer: -25

10) 25 + (-25)
Start at 25, move 25 left → 0
✔ Answer: 0

11) -30 + 12
Start at -30, move 12 right → -18
✔ Answer: -18

12) 14 + (-19)
Start at 14, move 19 left → -5
✔ Answer: -5

13) -7 + (-13)
Start at -7, move 13 left → -20
✔ Answer: -20

14) 22 + (-11)
Start at 22, move 11 left → 11
✔ Answer: 11

15) -15 + 20
Start at -15, move 20 right → 5
✔ Answer: 5

16) -18 + (-12)
Start at -18, move 12 left → -30
✔ Answer: -30

17) 30 + (-35)
Start at 30, move 35 left → -5
✔ Answer: -5

18) -25 + 25
Start at -25, move 25 right → 0
✔ Answer: 0

19) -40 + 15
Start at -40, move 15 right → -25
✔ Answer: -25

20) 17 + (-22)
Start at 17, move 22 left → -5
✔ Answer: -5

21) -9 + (-11)
Start at -9, move 11 left → -20
✔ Answer: -20

22) 28 + (-14)
Start at 28, move 14 left → 14
✔ Answer: 14

23) -33 + 18
Start at -33, move 18 right → -15
✔ Answer: -15

24) 10 + (-25)
Start at 10, move 25 left → -15
✔ Answer: -15

25) -50 + 30
Start at -50, move 30 right → -20
✔ Answer: -20

26) 45 + (-45)
Start at 45, move 45 left → 0
✔ Answer: 0

27) -27 + (-13)
Start at -27, move 13 left → -40
✔ Answer: -40

28) 36 + (-40)
Start at 36, move 40 left → -4
✔ Answer: -4

29) -19 + 24
Start at -19, move 24 right → 5
✔ Answer: 5

30) 50 + (-55)
Start at 50, move 55 left → -5
✔ Answer: -5

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Final Answer:
1) 3
2) 3
3) -14
4) -1
5) 0
6) -20
7) 1
8) 2
9) -25
10) 0
11) -18
12) -5
13) -20
14) 11
15) 5
16) -30
17) -5
18) 0
19) -25
20) -5
21) -20
22) 14
23) -15
24) -15
25) -20
26) 0
27) -40
28) -4
29) 5
30) -5