PSLE Diana had a rectangular piece of paper, 43.5 cm by 20 cm. She cut out as many squares as possible from the paper. The side of each square was 5 cm.
- How many squares did Diana cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 43.5 ÷ 5
= 8 r 3.5
Number of squares that can be cut out breadthwise
= 20 ÷ 5
= 4 r 0
Total number of squares
= 4 x 8
= 32
(b)
Remaining length of the paper left = 3.5 cm
Area of the paper left
= 3.5 x 20
= 70 cm
2 Answer(s): (a) 32; (b) 70 cm
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