PSLE Sarah had a rectangular piece of paper, 75.5 cm by 36 cm. She cut out as many squares as possible from the paper. The side of each square was 3 cm.
- How many squares did Sarah cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 75.5 ÷ 3
= 25 r 0.5
Number of squares that can be cut out breadthwise
= 36 ÷ 3
= 12 r 0
Total number of squares
= 12 x 25
= 300
(b)
Remaining length of the paper left = 0.5 cm
Area of the paper left
= 0.5 x 36
= 18 cm
2 Answer(s): (a) 300; (b) 18 cm
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