Ratios and rates

Which Ratio Doesn’t Belong

100

Ratios: 2:3, 4:6, 3:5, 6:9

3:5

200

: Ratios: 5:10, 10:20, 7:14, 15:25

15:25

300

Ratios: 8:12, 4:6, 6:8, 12:18

6:8

Express the ratio

100

4 apples to 2 oranges

4 to 2, 4:2, or 4/2

200

5 dogs to 10 cats

5 to 10, 5:10, or 5/10

300

3 red marbles and 9 blue marbles

3 to 9, 3:9, or 3/9

Tables and Patterns

100

Salsa table: 4, 8, 12, 16 jars → 32, 64, 96, ___ ounces

128 ounces

200

4, 8, 12, 16 jars → 32, 64, 96, ___ ounces

 Pattern in the rows of salsa table?

Jars × 8 = ounces

300

 Pattern in the columns of salsa table?

+4 jars adds +32 ounces

Constant rate or not

100

Hamburger: 2 lb = $7, 3 lb = $10.50 → 4 lb = ?

$14.00 (yes, $3.50 per lb)

200

Tickets: 6 = $34.50, 8 = $44, 10 = $52.50. Constant rate?

Yes, $5.50 per ticket

300

Dogs: 6 = $112.50, 8 = $150, 11 = $206.25. Constant rate?

Yes, $18.75 per dog

Word Problems

100

5 pencils = $2.50. Cost per pencil?

$0.50 per pencil

200

A car travels 180 miles in 3 hours. Rate?

60 mph

300

A recipe uses 4 cups flour for 6 cookies. Flour per cookie?

2/3 cup per cookie