Answer:
1. 2 + 3
2. -4 - 8
3. -4 + 8
4. -2 × 2
5. 24 ÷ 2
6. 3 - 8
7. 1 × 7
8. -7 ÷ -1
9. 36 ÷ 4
10. 3 × -3
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