Rational Numbers Negative

Solve. Rules:

Same sign: add and keep the sign

Different signs: subtract and keep the sign of the bigger number

Solve. Rules for multiplying:

Negative x Negative = Positive

Negative x Positive = Negative

Solve. Hint: Change the fraction to a decimal first.

Rules for multiplying:

Negative x Negative = Positive

Negative x Positive = Negative

Hint: Change the fractions to decimals first.

Rules:

Same sign: add and keep the sign

Different signs: subtract and keep the sign of the bigger number

Hint: leave them as fractions and multiply.

Solve. Rules for multiplying:

Negative x Negative = Positive

Negative x Positive = Negative

Solve. Rules for multiplying:

Negative x Negative = Positive

Negative x Positive = Negative

Hint: make the mixed numbers improper fractions first.

Solve. Rules for multiplying:

Negative x Negative = Positive

Negative x Positive = Negative

Hint: Get a common denominator first (least common multiple).

What is the opposite of

−20?

Which pair of numbers are opposites?

• −4 and −1/4

• −4 and 1/4

• -1/4 and 1/4

• −14 and 1/4