Let's solve each of these addition problems step by step. We are adding three integers in each case, including positive numbers, negative numbers, and zero.
We'll go through them one by one:
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1) (+7) + (+5) + (0) =
= 7 + 5 + 0 =
12
2) (+5) + (+5) + (+1) =
= 5 + 5 + 1 =
11
3) (0) + (-4) + (-6) =
= 0 - 4 - 6 =
-10
4) (-8) + (-2) + (+9) =
= -8 - 2 + 9 = -10 + 9 =
-1
5) (+2) + (+8) + (+4) =
= 2 + 8 + 4 =
14
6) (+5) + (+2) + (+5) =
= 5 + 2 + 5 =
12
7) (+1) + (0) + (+3) =
= 1 + 0 + 3 =
4
8) (+1) + (+1) + (+1) =
= 1 + 1 + 1 =
3
9) (-6) + (-1) + (-2) =
= -6 -1 -2 =
-9
10) (-4) + (-8) + (0) =
= -4 -8 + 0 =
-12
11) (+9) + (+9) + (+7) =
= 9 + 9 + 7 =
25
12) (+9) + (+5) + (+8) =
= 9 + 5 + 8 =
22
13) (0) + (+3) + (+8) =
= 0 + 3 + 8 =
11
14) (+5) + (+1) + (+9) =
= 5 + 1 + 9 =
15
15) (+8) + (+3) + (+7) =
= 8 + 3 + 7 =
18
16) (+5) + (+6) + (-4) =
= 5 + 6 - 4 = 11 - 4 =
7
17) (+3) + (+2) + (+3) =
= 3 + 2 + 3 =
8
18) (-8) + (-8) + (+8) =
= -8 -8 + 8 = -16 + 8 =
-8
19) (+9) + (+8) + (-5) =
= 9 + 8 - 5 = 17 - 5 =
12
20) (-3) + (+6) + (+6) =
= -3 + 6 + 6 = 3 + 6 =
9
21) (+1) + (+2) + (-1) =
= 1 + 2 - 1 = 3 - 1 =
2
22) (0) + (-6) + (+3) =
= 0 -6 + 3 = -6 + 3 =
-3
23) (+6) + (+9) + (-1) =
= 6 + 9 - 1 = 15 - 1 =
14
24) (-1) + (-1) + (-3) =
= -1 -1 -3 =
-5
25) (+1) + (+2) + (+1) =
= 1 + 2 + 1 =
4
26) (+8) + (+9) + (+2) =
= 8 + 9 + 2 =
19
27) (+2) + (+1) + (-5) =
= 2 + 1 - 5 = 3 - 5 =
-2
28) (0) + (-9) + (+7) =
= 0 -9 + 7 = -9 + 7 =
-2
29) (+2) + (+3) + (+4) =
= 2 + 3 + 4 =
9
30) (+7) + (+2) + (+1) =
= 7 + 2 + 1 =
10
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✔ Final Answers:
1) 12
2) 11
3) -10
4) -1
5) 14
6) 12
7) 4
8) 3
9) -9
10) -12
11) 25
12) 22
13) 11
14) 15
15) 18
16) 7
17) 8
18) -8
19) 12
20) 9
21) 2
22) -3
23) 14
24) -5
25) 4
26) 19
27) -2
28) -2
29) 9
30) 10
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🔍 Explanation:
When adding integers:
-
Positive numbers increase the total.
-
Negative numbers decrease the total.
-
Zero has no effect.
- You can add all positives first, then all negatives, and combine the results.
For example:
(-8) + (-2) + (+9) →
Add negatives: -8 -2 = -10
Then add positive: -10 + 9 = -1
This method works for all such problems.
Let me know if you'd like this formatted as a table or printed out!
Parent Tip: Review the logic above to help your child master the concept of integer order of operation worksheet.
