Comparing Part-to-Whole Ratios

Choose the methods used to compare ratios.

• Turn ratios into percents.

• Find the difference of the ratios and compare.

• Make equivalent ratios with a same term by cross multiplying.

• The ratio with the biggest numbers is the biggest ratio.

3/6 ___ 8/12

• >
• <
• =

1/3 ___ 2/7

• >
• <
• =

5/10 ___ 2/7

• >
• <
• =

KG won 8 out of 13 football games & Ferny won 14 out of 20 games, which ratio is better?

• 8 : 13

• 14 : 20

• 182/260

• 160/260

Which is the Greater Ratio in the following pair, 5 : 9, 7 : 12

• 20 : 36

• 21 : 36

• 7 : 12

• 5 : 7

Emilia and Darnell are arguing over who makes the best fruit punch. Emilia likes to use 2 cups of grape juice for every 5 cups of pineapple juice. Darnell prefers to use 1 cup of grape juice for every 4 cups of pineapple juice. Do Emilia and Darnell use the same ratio of grape juice to pineapple juice?

• yes

• no

Zane's cats love tuna fish, so he always mixes a little into their food at dinnertime. For his small cat, he adds 2 ounces of tuna fish to 10 ounces of cat food. For his large cat, he adds 3 ounces of tuna fish to 12 ounces of cat food. Which cat's meal tastes more like tuna fish?

• Large cat

• Small cat

• They are the same