Unit 2 Review

What are the rules to multiply integers?

• If the signs are the same, the product is positive.

• If the signs are different, the product is negative.

• Divide the absolute values of the numbers.

• Add the absolute values of the numbers.

What is the result of multiplying a positive number with a negative number?

• Positive

• Negative

• Zero

• Cannot be determined

What happens when you divide two integers with different signs?

• The quotient is positive

• The quotient is negative

• The remainder is dropped

• The division is undefined

Match the following. See if you can see the pattern.

• Positive

• 3 x (-1) (-1)

• Positive

• 3x(-1)(-1)(-1)(-1)(-1)

• Negative

• 3 x (-1)(-1)(-1)

• Negative

• 3 x(-1)(-1)(-1)(-1)

-10 (-3x - 5y)

• 30x - 50y

• -30x - 50y

• 80xy

• 30x + 50y

3x (9 + 2y - 3z)

• 27x + 6xy - 9xz

• 24xyz

• 27 + 6y - 9z

• 27x + 6x - 9x

3(2c - 5)

• 6c - 15
• 6c + 15
• 6c + 15
• -6c - 15