Dividing with unit fractions

Front

What is a unit fraction?

Back

A unit fraction is a fraction where the numerator is 1 and the denominator is a positive integer, such as 1/2, 1/3, or 1/4.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2A

Front

How do you divide a whole number by a unit fraction?

Back

To divide a whole number by a unit fraction, multiply the whole number by the reciprocal of the unit fraction.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What is the reciprocal of 1/4?

Back

The reciprocal of 1/4 is 4/1 or simply 4.

Front

Calculate: 6 ÷ 1/4

Back

24

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

If a shop uses 1/6 of a box of cones each day, how many days will 5 boxes last?

Back

30 days

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

When dividing a whole number by a unit fraction, what do you find?

Back

You find out how many fractional parts are in the whole number.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

Calculate: 8 ÷ 1/4

Back

32

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

In a relay race, if each team runs 3 miles and each member runs 1/3 mile, how many members are needed?

Back

9 members

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What does it mean to divide by a fraction?

Back

Dividing by a fraction means to multiply by its reciprocal.

Front

What is the result of 10 ÷ 1/5?

Back

50

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C