PSLE Min had a rectangular piece of paper, 43.8 cm by 30 cm. She cut out as many squares as possible from the paper. The side of each square was 3 cm.
- How many squares did Min cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 43.8 ÷ 3
= 14 r 1.8
Number of squares that can be cut out breadthwise
= 30 ÷ 3
= 10 r 0
Total number of squares
= 10 x 14
= 140
(b)
Remaining length of the paper left = 1.8 cm
Area of the paper left
= 1.8 x 30
= 54 cm
2 Answer(s): (a) 140; (b) 54 cm
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