PSLE Natalie had a rectangular piece of paper, 72 cm by 34.5 cm. She cut out as many squares as possible from the paper. The side of each square was 4 cm.
- How many squares did Natalie cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out breadthwise
= 34.5 ÷ 4
= 8 r 2.5
Number of squares that can be cut out lengthwise
= 72 ÷ 4
= 18 r 0
Total number of squares
= 18 x 8
= 144
(b)
Remaining breadth of the paper left = 2.5 cm
Area of the paper left
= 72 x 2.5
= 180 cm
2 Answer(s): (a) 144; (b) 180 cm
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