PSLE Zoe had a rectangular piece of paper, 49.2 cm by 33 cm. She cut out as many squares as possible from the paper. The side of each square was 3 cm.
- How many squares did Zoe cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 49.2 ÷ 3
= 16 r 1.2
Number of squares that can be cut out breadthwise
= 33 ÷ 3
= 11 r 0
Total number of squares
= 11 x 16
= 176
(b)
Remaining length of the paper left = 1.2 cm
Area of the paper left
= 1.2 x 33
= 39.6 cm
2 Answer(s): (a) 176; (b) 39.6 cm
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