PSLE Tina had a rectangular piece of paper, 50 cm by 24.5 cm. She cut out as many squares as possible from the paper. The side of each square was 5 cm.
- How many squares did Tina cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out breadthwise
= 24.5 ÷ 5
= 4 r 4.5
Number of squares that can be cut out lengthwise
= 50 ÷ 5
= 10 r 0
Total number of squares
= 10 x 4
= 40
(b)
Remaining breadth of the paper left = 4.5 cm
Area of the paper left
= 50 x 4.5
= 225 cm
2 Answer(s): (a) 40; (b) 225 cm
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