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.

Grade 4·22 problems·~32 min·Common Core Math - Grade 4·standard·4-oa-a-2

Work through problems with immediate feedback

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

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 ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ .

comparison factor:

fox's weight:

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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