Area with half squares

Grade 3 · Area, perimeter and volume

A shape is shaded on a grid, with two or four half squares along its edges. The student finds its area in square units.

Two half squares make one whole, so the halves have to be paired up rather than counted as whole squares.

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What changes each time

• Shapes of 4 to 10 whole squares
• Two or four half squares
• A new shape every time

More area, perimeter and volume practice

• Area by counting squares (Grade 2)
• Area and perimeter of a square (Grade 3)
• Area and perimeter of a rectangle (Grade 3)
• Area of an L-shape (Grade 3)
• Perimeter of an L-shape (Grade 3)
• Draw a rectangle with a given area and perimeter (Grade 3)
• Missing side of a rectangle (Grade 4)
• Rectangle sides from a ratio (Grade 4)
• Area of a right triangle (Grade 4)
• Area of an isosceles triangle (Grade 4)
• Area of a scalene triangle (Grade 4)
• Area of an irregular polygon (Grade 5)
• Missing triangle in a square (Grade 5)
• Volume by counting cubes (Grade 5)

All practice topics