PSLE Joelle had a rectangular piece of paper, 42.9 cm by 36 cm. She cut out as many squares as possible from the paper. The side of each square was 6 cm.
- How many squares did Joelle cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 42.9 ÷ 6
= 7 r 0.9
Number of squares that can be cut out breadthwise
= 36 ÷ 6
= 6 r 0
Total number of squares
= 6 x 7
= 42
(b)
Remaining length of the paper left = 0.9 cm
Area of the paper left
= 0.9 x 36
= 32.4 cm
2 Answer(s): (a) 42; (b) 32.4 cm
2