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1. Remember to Keep Flip Change -12-(-15)= 2. 12-15= Remember to Keep Flip Change 3. 12-(-15)= Remember to Keep Flip Change 4. -12-15= Remember to Keep Flip Change 5. 10-21= Remember to Keep Flip Change 6. Remember to Keep Flip Change 7-(-25)= 7. -8-10= Remember to Keep Flip Change 8. 9-(-12)= Remember to Keep Flip Change 9. Remember to Keep Flip Change -21-3= 10. Remember to Keep Flip Change 14-20= |