PSLE Xandra had a rectangular piece of paper, 43.8 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 Xandra cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 43.8 ÷ 4
= 10 r 3.8
Number of squares that can be cut out breadthwise
= 28 ÷ 4
= 7 r 0
Total number of squares
= 7 x 10
= 70
(b)
Remaining length of the paper left = 3.8 cm
Area of the paper left
= 3.8 x 28
= 106.4 cm
2 Answer(s): (a) 70; (b) 106.4 cm
2