Integer rules operations

5 + (-9)

-9 + 9

-1 - (-7)

In multiplication if both numbers are negative

• always positive

• always negative

-6 x 7

• 42
• -42
• 48
• -48

• 5
• -5
• 3
• -3

Is the product –9 • (–4) positive or negative?

• negative
• positive
• both
• neither

• —4

• 4

• —100

• 100

3 - (-13)

• -10
• 10
• -16
• 16