PSLE Jade had a rectangular piece of paper, 49.2 cm by 28 cm. She cut out as many squares as possible from the paper. The side of each square was 4 cm.
- How many squares did Jade cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 49.2 ÷ 4
= 12 r 1.2
Number of squares that can be cut out breadthwise
= 28 ÷ 4
= 7 r 0
Total number of squares
= 7 x 12
= 84
(b)
Remaining length of the paper left = 1.2 cm
Area of the paper left
= 1.2 x 28
= 33.6 cm
2 Answer(s): (a) 84; (b) 33.6 cm
2