PSLE Shiyun had a rectangular piece of paper, 73.2 cm by 36 cm. She cut out as many squares as possible from the paper. The side of each square was 2 cm.
- How many squares did Shiyun cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 73.2 ÷ 2
= 36 r 1.2
Number of squares that can be cut out breadthwise
= 36 ÷ 2
= 18 r 0
Total number of squares
= 18 x 36
= 648
(b)
Remaining length of the paper left = 1.2 cm
Area of the paper left
= 1.2 x 36
= 43.2 cm
2 Answer(s): (a) 648; (b) 43.2 cm
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