PSLE Tina had a rectangular piece of paper, 45.4 cm by 39 cm. She cut out as many squares as possible from the paper. The side of each square was 3 cm.
- How many squares did Tina cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 45.4 ÷ 3
= 15 r 0.4
Number of squares that can be cut out breadthwise
= 39 ÷ 3
= 13 r 0
Total number of squares
= 13 x 15
= 195
(b)
Remaining length of the paper left = 0.4 cm
Area of the paper left
= 0.4 x 39
= 15.6 cm
2 Answer(s): (a) 195; (b) 15.6 cm
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