PSLE Emma had a rectangular piece of paper, 78.5 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 Emma cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 78.5 ÷ 2
= 39 r 0.5
Number of squares that can be cut out breadthwise
= 36 ÷ 2
= 18 r 0
Total number of squares
= 18 x 39
= 702
(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) 702; (b) 18 cm
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