Multiplying/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 the denominators together. Simplify the result if possible.

Tags

CCSS.7.NS.A.2C

Front

What is the product of 1/3 and 3/4?

Back

1/3 x 3/4 = 3/12 = 1/4 after simplification.

Tags

CCSS.5.NF.B.6

Front

How do you divide two rational numbers?

Back

To divide two rational numbers, multiply the first number by the reciprocal of the second number.

Tags

CCSS.7.NS.A.2C

Front

What is the reciprocal of 2/5?

Back

The reciprocal of 2/5 is 5/2.

Front

What is the result of dividing 1/2 by 1/4?

Back

1/2 ÷ 1/4 = 1/2 x 4/1 = 2.

Tags

CCSS.6.NS.A.1

Front

What does it mean to simplify a fraction?

Back

To simplify a fraction means to reduce it to its lowest terms, where the numerator and denominator have no common factors other than 1.

Front

What is the simplest form of 8/12?

Back

The simplest form of 8/12 is 2/3.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, 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

What is 3.8 as a fraction?

Back

3.8 can be expressed as 38/10, which simplifies to 19/5.