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B. Perform the indicated operation.
1. -5 + (-7) 6. +3 + (-8)
2. -67 x -5 7. +34 – (-65)
3. -8 + (-4) 8. +88 ÷ -4
4. +3 x -16 9. +7 + (-2) + (+10)
5. +45 ÷ +15 10. -65 – (-34)