PSLE Opal had a rectangular piece of paper, 61.2 cm by 38 cm. She cut out as many squares as possible from the paper. The side of each square was 2 cm.
- How many squares did Opal cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 61.2 ÷ 2
= 30 r 1.2
Number of squares that can be cut out breadthwise
= 38 ÷ 2
= 19 r 0
Total number of squares
= 19 x 30
= 570
(b)
Remaining length of the paper left = 1.2 cm
Area of the paper left
= 1.2 x 38
= 45.6 cm
2 Answer(s): (a) 570; (b) 45.6 cm
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