Grade 4 Math · Measurement

Use the row and column structure of an array to measure the areas of rectangles, and show that area can be found by multiplying side lengths

10 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest — every one with a full worked solution. Work through them free, no account needed.

Start the 10 questions Curriculum: G4-E2.5

Sample: the first question, solved

A rectangle has 4 rows and 5 columns of unit squares. What is its area?

📘 Worked solution
4×5 = 20 unit squares.

And one from the hard end

Use an array to find the area of a rectangle 5 units long and 6 units wide.

Solution shown after you try it in practice mode.

Work through all 10, easiest to hardest

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