Unit 8 Fractions

Vocabulary

100

A fraction that is less than 1 is called a

Proper Fraction

200

 represent the same value, even though the numbers are different. 

Equivalent fractions

300

________ are common fractions that we can use to estimate or compare other fractions to.

Benchmark fractions

400

A ______ is a combination of a whole number and a fraction.

mixed number

500

A _____is a number that can be divided by each of the denominators of a group of fractions.

common denominator

Adding/Subtracting fractions

100

5/8+2/4=

9/8 or 1 1/8

200

2/5-4/15=

2/15

300

1/4+2/20=

7/20

400

3/4+4/5=

31/20 or 1 11/20

500

3/5-7/15=

2/15

Word Problems

100

There are 32 houses in your neighborhood. eight of the houses have a fence. In simplest form, what fraction of the houses have a fence?

1/4

200

1.  Mrs. Wengiel needs 1 gallon of water to fill her fishbowl. she has 1/3 of gallon of water in one pitcher and 7/9 gallon in another. Do you have enough water to fill your fishbowl? Explain.

Yes she has 10/9 which is 1 and 1/9 so it is over a gallon.

300

Yaretzi's backpack weighs 6 3/4 pounds. Alex's  backpack weighs 3 2/3 pounds. How much heavier is Yaretzi's backpack than your Alex’s backpack?

3 1/12

400

1. Your family spends 18 hours at a theme park. You spend 1/18 of the hours in the petting zoo and 5/6 of the hours on the rides. You spend the rest of the time watching shows. How many hours does your family spend watching shows? 

2 hours

500

1. You want to run a lap around the playground in 5/6  minute. Your first attempt takes 6/10  minute. Your second attempt takes 3/5 minute less than your first attempt. Did you meet your goal? 

No

Adding mixed Numbers

100

3 3/4+ 2 4/12=

6 1/12

200

4 1/3 +5 1/10=

9 13/30

300

7 4/5 + 3 2/4=

11 6/20

400

8 12/16 + 3 15/48=

12 3/48

500

9/12+7 3/24=

7 21/24

Subtracting mixed number

100

4 3/5- 1 1/3=

3 4/15

200

10 1/5- 6 4/20=

4

300

11 2/15- 3 4/5=

   

7 5/15

400

8 7/9-1 2/3=

7 1/9

500

12 1/15 -9 5/30=

2 12/30