Equivalent Ratios Check In
Name: ___________________________
Find two equivalent ratios for each of the numbers below:
A) 2:3
B) 9:4
C) 10:3
D) 5:4
E) 3:7
F) 6:10
G) 25:18
H) 15:35
I) 12:46
J) 8:96
Ms. W. is baking cookies for her family reunion. The following is her special recipe for chocolate chip cookies; this recipe
only makes one batch of 12 cookies.
â ½ cup brown sugar
â ¼ cup white sugar
â ½ cup butter/margarine
â 1 egg
â 1 teaspoon vanilla
â
â
â
â
1 cup flour
½ teaspoon baking soda
½ teaspoon salt
1 cup chocolate chips
Suppose Ms. W. wants to make six batches of cookies for her family reunion. Find the missing ingredient quantities in
the chart below, and correct the ones that may be incorrect. It is essential that the ingredients are right for each
batch of cookies; an extra egg here, or too much salt there, may prove disastrous for Ms. W.’s family reunion!
Ingredients
to batches of
cookies
1 batch of
cookies
Flour
White
Sugar
Eggs
Butter
Vanilla
Baking
Soda
Salt
Chocolate
Chips
Brown
Sugar
1 cup
¼ of a
cup
1 eggs
½ of a
cup
½ of a
teaspoon
½ of a
teaspoon
½ of a
teaspoon
1 cup
½ of a
cup
2 batches of
cookies
2 cups
½ of a
cup
3
eggs
1 cup
1 teaspoon
1 teaspoon
4
eggs
2 cups
10
eggs
5 cups
4 batches of
cookies
8 batches of
cookies
9 cups
1 teaspoon
2 cups
2 teaspoons
4 teaspoons
8 cups
1. What is the ratio of cups of flour to cups of chocolate chips when you make 3 batches of cookies?
2. What is the ratio of eggs to cups of butter when you make 8 batches of cookies?
3. What is the ratio of cups of white sugar to both types of sugar (white/brown) when you make 2 batches of cookies?
CHALLENGE: What is the equivalent ratio of eggs to flour, and flour to chocolate chips, and butter to eggs if Ms. W.
makes 25 batches of cookies? What if she makes 25 batches but burns 10 – what are the equivalent ratios before and
after the kitchen accident?