PSLE Julie had a rectangular piece of paper, 43.1 cm by 30 cm. She cut out as many squares as possible from the paper. The side of each square was 2 cm.
- How many squares did Julie cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 43.1 ÷ 2
= 21 r 1.1
Number of squares that can be cut out breadthwise
= 30 ÷ 2
= 15 r 0
Total number of squares
= 15 x 21
= 315
(b)
Remaining length of the paper left = 1.1 cm
Area of the paper left
= 1.1 x 30
= 33 cm
2 Answer(s): (a) 315; (b) 33 cm
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