1. 1

2. -10

3. -63

4. 5

5. -12

Step-by-step explanation:

1.unlike sign, so do the subtraction

2. like sign, do addition and copy the negative sign

3.when multiplying numbers with different sign it is always negative(negative times negative is positive while positive times negative is negative)

4.same as multiplying if the numbers has different signs, it is negative while if the signs are common it is positive

5.negative plus negative is negative

Answer:

need ko po ng point sorry

Step-by-step explanation:

sorry