Usha spent less than $100. She already bought a toy helicopter at $33.30. She tried to use up all her money and bought another two items.
- Name the two items. Give your answers in letters. (Eg a, b)
- What was the total cost for the two items?
(a)
Estimated amount that Madam Usha left to spend on the 2 items
= 100 - 33.30
= $66.70
Round off each number to the nearest tens for a more accurate estimation.
(a) Cube: $19.70 ≈ $20
(b) Guitar: $48.10 ≈ $50
(c) Cushion: $27.30 ≈ $30
(d) Ball: $38.30 ≈ $40
30 + 40 = 70
70 is nearest to 66.70.
Total amount spent on the two items
= 27.30 + 38.30
= $65.60
To use up all her money to buy another 2 items, she cannot exceed $66.70.
The total amount of $65.60 is nearest to and less than $66.70.
So, Usha bought (c) Cushion and (d) Ball.
Answer(s): (a) c, d; (b) $65.60
