Let’s solve each problem step by step. We’re adding and subtracting integers — remember:
- Subtracting a negative is like adding:
Example: 8 – (–10) = 8 + 10 = 18
- Adding a negative is like subtracting:
Example: –9 + 7 = –2
We’ll go row by row, left to right.
---
Row 1:
8 – (–10) = 8 + 10 =
18
12 – 6 =
6
Row 2:
7 – (–8) = 7 + 8 =
15
–7 – (–12) = –7 + 12 =
5
Row 3:
2 – 8 =
–6
9 – (–4) = 9 + 4 =
13
Row 4:
–9 + 7 =
–2
–3 + (–12) = –3 – 12 =
–15
Row 5:
–10 – 12 =
–22
–8 + (–11) = –8 – 11 =
–19
Row 6:
11 – 10 =
1
11 – (–5) = 11 + 5 =
16
Row 7:
–11 + 2 =
–9
9 – (–1) = 9 + 1 =
10
Row 8:
2 – 9 =
–7
–1 – 11 =
–12
Row 9:
3 + 9 =
12
3 – (–11) = 3 + 11 =
14
Row 10:
–5 – 11 =
–16
–2 – 7 =
–9
Row 11:
10 – 11 =
–1
6 – (–4) = 6 + 4 =
10
Row 12:
8 – 7 =
1
–2 – (–11) = –2 + 11 =
9
Row 13:
12 + (–2) = 12 – 2 =
10
---
Final Answer:
18, 6, 15, 5, –6, 13, –2, –15, –22, –19, 1, 16, –9, 10, –7, –12, 12, 14, –16, –9, –1, 10, 1, 9, 10
Parent Tip: Review the logic above to help your child master the concept of adding and subtracting positive and negative numbers worksheet.
