PSLE Kathy had a rectangular piece of paper, 68 cm by 38.1 cm. She cut out as many squares as possible from the paper. The side of each square was 4 cm.
- How many squares did Kathy cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out breadthwise
= 38.1 ÷ 4
= 9 r 2.1
Number of squares that can be cut out lengthwise
= 68 ÷ 4
= 17 r 0
Total number of squares
= 17 x 9
= 153
(b)
Remaining breadth of the paper left = 2.1 cm
Area of the paper left
= 68 x 2.1
= 142.8 cm
2 Answer(s): (a) 153; (b) 142.8 cm
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