← Back to the activity

Grade 3 Math — Area by counting squares

Measure the area of a shape on squared paper by counting the squares it covers, including half squares.

Name: ________________________

  1. 1.Three shapes are drawn on this grid. Tap the shape that covers the most squares.

    Write the number of the part.

    123

  2. 2.Match each rectangle to the number of squares it covers.

    • 2 across and 3 down
    • 3 across and 3 down
    • 4 across and 5 down
    • 6 across and 6 down
    • 36
    • 9
    • 6
    • 20

  3. 3.A rectangle covers 24 squares and is 6 squares across. How many squares tall is it?

  4. 4.Sort each rectangle by whether it covers fewer or more than 20 squares.

    Groups: Fewer than 20 squares · More than 20 squares

    • 6 across and 4 down
    • 3 across and 5 down
    • 5 across and 5 down
    • 2 across and 9 down
    • 7 across and 3 down
    • 4 across and 4 down

  5. 5.Which rectangle covers the most squares?

    • a) 3 across and 6 down
    • b) 4 across and 4 down
    • c) 2 across and 8 down
    • d) 5 across and 3 down

  6. 6.A rectangle on squared paper is 7 squares across and 4 squares down. How many squares does it cover?

  7. 7.A shape covers 20 full squares and 6 half squares. What is its area, in squares?

  8. 8.A shape drawn on squared paper covers 8 full squares in its upper part and 6 full squares in its lower part. What is its area, in squares?

Answer key — Grade 3 Math — Area by counting squares

  1. 1. 2 — Shape B
  2. 2. 2 across and 3 down → 6; 3 across and 3 down → 9; 4 across and 5 down → 20; 6 across and 6 down → 36
  3. 3. 4
  4. 4. 3 across and 5 down → Fewer than 20 squares; 4 across and 4 down → Fewer than 20 squares; 5 across and 5 down → More than 20 squares; 6 across and 4 down → More than 20 squares; 2 across and 9 down → Fewer than 20 squares; 7 across and 3 down → More than 20 squares
  5. 5. a) 3 across and 6 down
  6. 6. 28
  7. 7. 23
  8. 8. 14