PSLE Emma had a rectangular piece of paper, 40.9 cm by 40 cm. She cut out as many squares as possible from the paper. The side of each square was 5 cm.
- How many squares did Emma cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 40.9 ÷ 5
= 8 r 0.9
Number of squares that can be cut out breadthwise
= 40 ÷ 5
= 8 r 0
Total number of squares
= 8 x 8
= 64
(b)
Remaining length of the paper left = 0.9 cm
Area of the paper left
= 0.9 x 40
= 36 cm
2 Answer(s): (a) 64; (b) 36 cm
2