Ch. 9 Math Review

Like denominators

100

3/8 + 2/8=

5/8

200

7/10-4/10=

3/10

300

5/12 + 6/12=

11/12

400

9/15 -2/15=

7/15

500

11/16+ 3/16=

7/8

Unlike denominators

100

1/4 +2/4= 

3/4

200

3/5-1/10=

1/2

300

1-3/6=

1/2

400

7/8-1/4=

5/8

500

5/6+7/12=

1 5/12

Word Problems

100

Liam ate 2/8 of a pizza at lunch and 3/8 at dinner. How much did he eat in all?

5/8 of the pizza

200

A ribbon measured 2/4 meters long. Sarah cuts off 1/4 meter. How much ribbon is left? 

1/2 meters

300

A recipe needs 2/3 cup of sugar. You already added 1/6 cup. How much more sugar do you need?

1/2 cup

400

Emma ran 5/6 miles in the morning and 1/3 mile in the evening. How far did she run in total?

1 1/6 miles

500

A water tank hold 7/8 gallon of water, 3/10 is used. How much water remains?

23/40 gallons 

Equivalent Fractions

100

2/3= ?/6

4

200

5/8= ?/16

10

300

3/4= ?/12

9

400

1/5= ?/10

2

500

7/9=?/27

21

Misc.

100

If a word problem asks the question: what is the difference? Should you add, subtract, multiply, or divide to solve the problem?

Subtract

200

If a word problem asks who ran the shortest distance, should you look for the largest number or the smallest number?

smallest

300

Is the numerator the top or bottom number in a fraction?

Top number

400

Change 17/4 to a mixed number

4 1/4

500

Change 3 2/5 to an improper fraction

17/5