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## Question

primary 5 | Maths
| Fractions

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What fraction of ABCD is unshaded

16 squares in total, with 4 fully shaded hence remaining (unshaded) = 12/16 = 3/4 (after simplifying)

Concept is a bit like jigsaw puzzle. Try to fit the partially shaded parts to form one shaded square

Let length of 1 small square be 1 unit.

Area of shaded triangle = ½ x base x height

= ½ x 2 units x 4 units

= 4 units²

Area of big square

= 4 units x 4 units

= 16 units²

Fraction that is shaded

= 4 units² ÷ 16 units²

= ¼

Fraction that is unshaded

= 1 - ¼ = ¾

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