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Grade 3 area of rectangles worksheets

3.MD.C.7 Measurement and geometry

Printable area of rectangles worksheets for grade 3, aligned to Common Core standard 3.MD.C.7. Whole-number sides.

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Sample problems

  1. A rectangle measures 9 cm by 3 cm. What is its area? 27 cm²
  2. A rectangle measures 10 cm by 14 cm. What is its area? 140 cm²
  3. A rectangle measures 5 cm by 5 cm. What is its area? 25 cm²
  4. A rectangle measures 12 cm by 7 cm. What is its area? 84 cm²
  5. A rectangle measures 4 cm by 12 cm. What is its area? 48 cm²
  6. A rectangle measures 9 cm by 7 cm. What is its area? 63 cm²
  7. A rectangle measures 12 cm by 2 cm. What is its area? 24 cm²
  8. A rectangle measures 6 cm by 7 cm. What is its area? 42 cm²

These eight are one sample at medium difficulty — the generator makes a different set every time.

A worked example

A rectangle measures 9 cm by 3 cm. What is its area? 27 cm²

  1. Area = length × width
  2. 9 × 3 = 27 cm²

Every problem on the answer key can show its steps like this — turn on “Show steps” before downloading.

About these worksheets

Each problem states its own measurements, so the reasoning is the same but the arithmetic is new every time. Every sheet is generated fresh, so you can print a new one on the same skill as often as you need — different numbers, same difficulty.

Pick how many problems you want and whether they should be easy, medium or hard, then download a PDF with a matching answer key. The key can show the worked steps for every problem, which is what a parent needs to see where a wrong answer went wrong.

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