Exercises: Solving Word Problems With Multiplicative Comparison
Work through each section in order. When a problem asks for an equation, use a letter to
stand for the unknown quantity before you solve.
Recall / Warm-Up
Compute 6 x 9.
Compute 72 / 8.
Which equation matches this comparison: "20 is 4 times as many as 5"?
20 = 4 x 5
20 = 5 x 5
5 = 4 x 20
20 = 4 + 5
Fluency Practice
A fern is 5 times as tall as a cactus. The cactus is 8 inches tall. How tall is the
fern?
A truck can carry 9 times as much weight as a cart. The cart can carry 60 pounds.
How much weight can the truck carry?
A lion weighs 8 times as much as a fox. The fox weighs 12 pounds.
Complete the equation, using n for the lion's weight: n = ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ x ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ .
How much does the lion weigh?
A wall is 7 times as tall as a fence. The fence is 6 feet tall. Which equation finds
the wall's height, h?
h = 7 x 6
h = 6 + 7
6 = 7 x h
h = 7 x 7
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