Review

Multiplication

100

7 x 7 =

49

200

11 x 9 =

99

300

2/4 x 4/6 

8/24 or 1/3

400

5³

125

500

7³

343

Division

100

21 divided by 3

7

200

42 divided by 7

6

300

Ms. Gatto has 100 lollipops and 20 students. How many lollipops can each student get? 

5 lollipops

400

2/4 divided by 3/6

12/12 or 1

500

4/5 divided by 2/3

12/ 10

Decimals

100

12.50 + 13.00

25.50

200

125.21 - 23.10

102.11

300

40.50 x .20

8.10

400

100 x .25

25

500

125.42 x 1.05

131.691

Ratios

100

There are 6 cats and 5 mice at the Bodega. What is the mice to cats ratio?

5 mice to 6 cats 

5/6

5:6

200

There are 12 boys and 7 girls in Mr. Wong's class. What is the girls to boys ratio?

7 girls to 12 boys

7/12

7:12

300

There are 15 pizza pies and 8 toppings available. What is the toppings to pizza pies ratio?

8 toppings to 15 pizza pies

8:15

8/15

400

Simplify the ratio 10/15

2/3

500

Simplify the ratio 8/24

1/3

Cross Multiply (Proportions)

100

2/? = 3/9

6

200

?/7 = 2/7

2

300

6/8 = a/12

9

400

b/20 = 3/60

1

500

70/100 = r/25

17.50