Multiplying and Dividing Rational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Tags

CCSS.5.NBT.A.2

Front

How do you multiply two rational numbers?

Back

To multiply two rational numbers, multiply the numerators together and multiply the denominators together.

Tags

CCSS.7.NS.A.2A

Front

What is the rule for dividing fractions?

Back

Keep the first fraction, change the division sign to multiplication, and flip the second fraction (keep change flip).

Tags

CCSS.6.NS.A.1

Front

What is the result of multiplying a positive rational number by a negative rational number?

Back

The result is a negative rational number.

Tags

CCSS.7.NS.A.2A

Front

What is the result of dividing a negative rational number by a positive rational number?

Back

The result is a negative rational number.

Tags

CCSS.7.NS.A.2B

Front

Calculate: -3/4 ÷ 1/2

Back

-3/2 or -1.5

Tags

CCSS.7.NS.A.2B

Front

Calculate: 2/3 × 3/4

Back

1/2

Tags

CCSS.5.NF.B.6

Front

What happens when you multiply two negative rational numbers?

Back

The result is a positive rational number.

Tags

CCSS.7.NS.A.2A

Front

How do you convert a decimal to a fraction?

Back

Write the decimal as a fraction with a denominator of 1, then multiply the numerator and denominator by 10 for each digit after the decimal point.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Front

Calculate: 0.75 ÷ 0.25

Back

3

Tags

CCSS.6.NS.B.3