Adding and Subtracting Mixed Integers from -20 to 20 (25 Questions ... - Free Printable

Sure! Let’s solve each of the integer addition and subtraction problems step by step. The key rules to remember are:

- Adding two positives → add normally, result is positive.
- Adding two negatives → add absolute values, result is negative.
- Adding a positive and a negative → subtract the smaller absolute value from the larger, and keep the sign of the number with the larger absolute value.
- Subtracting an integer → add its opposite:
`a - b = a + (-b)`
`a - (-b) = a + b`

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Let’s go row by row.

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Row 1:

( +2 ) – ( –16 ) =
→ Subtracting a negative is adding a positive:
`2 + 16 = 18` ✔

( –18 ) – ( +20 ) =
→ Subtracting a positive: `-18 - 20 = -38` ✔

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Row 2:

( +13 ) – ( +14 ) =
→ `13 - 14 = -1` ✔

( +10 ) + ( –14 ) =
→ `10 - 14 = -4` ✔

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Row 3:

( –11 ) + ( +16 ) =
→ `-11 + 16 = 5` ✔

( –18 ) – ( +2 ) =
→ `-18 - 2 = -20` ✔

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Row 4:

( –6 ) + ( –15 ) =
→ Add absolute values, keep negative: `-6 -15 = -21` ✔

( +2 ) + ( +17 ) =
→ `2 + 17 = 19` ✔

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Row 5:

( –15 ) + ( +9 ) =
→ `-15 + 9 = -6` ✔

( +7 ) + ( –18 ) =
→ `7 - 18 = -11` ✔

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Row 6:

( +7 ) – ( +13 ) =
→ `7 - 13 = -6` ✔

( –13 ) + ( +12 ) =
→ `-13 + 12 = -1` ✔

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Row 7:

( +1 ) + ( +14 ) =
→ `1 + 14 = 15` ✔

( +14 ) – ( +18 ) =
→ `14 - 18 = -4` ✔

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Row 8:

( +18 ) – ( +15 ) =
→ `18 - 15 = 3` ✔

( –16 ) + ( +6 ) =
→ `-16 + 6 = -10` ✔

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Row 9:

( –19 ) + ( –12 ) =
→ `-19 -12 = -31` ✔

( –17 ) + ( –2 ) =
→ `-17 -2 = -19` ✔

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Row 10:

( +18 ) – ( +4 ) =
→ `18 - 4 = 14` ✔

( –19 ) + ( –14 ) =
→ `-19 -14 = -33` ✔

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Row 11:

( +8 ) + ( –18 ) =
→ `8 - 18 = -10` ✔

( –15 ) – ( –13 ) =
→ Subtracting a negative: `-15 + 13 = -2` ✔

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Row 12:

( –6 ) – ( –16 ) =
→ `-6 + 16 = 10` ✔

( –12 ) + ( –1 ) =
→ `-12 -1 = -13` ✔

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Row 13:

( +16 ) – ( +12 ) =
→ `16 - 12 = 4` ✔

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## ✔ Final Answers (in order):

```
18, -38
-1, -4
5, -20
-21, 19
-6, -11
-6, -1
15, -4
3, -10
-31, -19
14, -33
-10, -2
10, -13
4
```

You can write these in the answer boxes on your worksheet accordingly.

Let me know if you’d like a printable version or explanation for any specific problem! 😊