PSLE Penelope had a rectangular piece of paper, 73.5 cm by 40 cm. She cut out as many squares as possible from the paper. The side of each square was 2 cm.
- How many squares did Penelope cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 73.5 ÷ 2
= 36 r 1.5
Number of squares that can be cut out breadthwise
= 40 ÷ 2
= 20 r 0
Total number of squares
= 20 x 36
= 720
(b)
Remaining length of the paper left = 1.5 cm
Area of the paper left
= 1.5 x 40
= 60 cm
2 Answer(s): (a) 720; (b) 60 cm
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