Multiplying and Dividing Rational Numbers

Front

What do you do when multiplying fractions?

Back

Multiply top times top and bottom times bottom.

Front

How do you find the weight of a person on Mars if they weigh 225 pounds on Earth?

Back

Multiply their weight on Earth by 0.38. (225 * 0.38 = 85.5 pounds)

Front

If peaches cost $2.50 per pound, how much do you pay for 3 pounds?

Back

$7.50 (2.50 * 3 = 7.50)

Front

What is the sign of the product of two numbers with opposite signs?

Back

Negative.

Front

Back

Front

What is a rational number?

Back

A number that can be expressed as a fraction, where both the numerator and denominator are integers.

Front

How do you divide fractions?

Back

Multiply by the reciprocal of the divisor.

Front

Back

Front

What happens when you multiply a positive number by a negative number?

Back

The result is negative.

Front

Back

12.