Adding and Subtracting Fractions

Fraction Vocabulary

100

The top number on Fraction

NUMERATOR

200

The type of fraction written as a combination of whole number and Fractions.

MIxed Numbers

300

When fractions do not have the same denominator, then these fractions are called __________.

Dissimilar fractions

or Unlike Fractions.

400

The smallest number that makes DISSIMILAR fraction similar.

LCD or Least Common Denominator

500

The highest number that can divide the numerator and the denominator to simplify it.

GCF or Greatest Common Factor

Addition 1

100

3/5 + 5/5

8/5 or 1 3/5

200

you can only add fraction only if______________.

The fractions have the same denominator

300

simplify.

2/3 + 4/10

32/30 or 1 and 1/15

400

Find the sum of 

3 1/2 and 5 2/9

157/18 or 

8 13/18

500

A recipe called for using 5 1⁄8 cups of flour before baking and another 8 7⁄9 cups after baking. What is the total amount of flour needed in the recipe?

1001/72 cups or

13 65/72 cups or

Addition 2

100

7/9 + 2/9

9/9 or 1

200

The LCD of expression below.

3/7 + 1/2

LCD  is 14

300

simplify.

1/8 + 2/3

19/24

400

Find the sum of

2 3/4 and 7 1/3

121/12

or

10 1/12

500

Haley's class recycled 5 5⁄6 boxes of paper in a month. If they recycled another 5 4⁄5 boxes the next month was is the total amount they recycled?

11 19/30 or 

349/30

Subtraction 1

100

Write 4 3/7 to an improper fraction

31/7

200

1 2/5 - 3/5

4/5

300

4/9 - 1/8

23/72

400

3 2/5 - 1 3/7

69/35 or 

1 34/35

500

Victor jogged 8 3⁄7 kilometers on Monday and 7 4⁄6 kilometers on Tuesday. What is the difference between these two distances?

32/42  or 

16/21

Subtraction 2

100

The LCD of 1/3 and 1/8 is _______.

24

200

2 2/7 - 1 5/7

4/7

300

1/3 -1/13

10/39

400

7 1/3 - 2 2/7

106/21 or 

5 1/21

500

A full garbage truck weighed 9 3⁄4 tons. After dumping the garbage, the truck weighed 3 5⁄9 tons. What was the weight of the garbage?

223/36 tons or

6 7/36 tons