Grade 4 math · T.1 · Find the Missing Side
Find the missing side of a rectangle
Divide the area by the side you know.
See worked examples
A rectangular poster has an area of 49 square decimetres. It is 7 dm long. How wide is it?
Answer: 7 dm
A rectangular garden is 10 m long and 12 m wide. What is its area?
Answer: 120 square metres
A rectangular patio has an area of 18 square metres. It is 3 m long. How wide is it?
Answer: 6 m
Tip: Divide the area by the side you know.
Curriculum
Common Core: 4.MD.A.3
On paper: this skill is in the printable pack Grade 4 Time and Measurement Word Problems (Common Core), with an answer key.
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