Gillian spent less than $100. She already bought a toy helicopter at $24.30. 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 Gillian left to spend on the 2 items
= 100 - 24.30
= $75.70
Round off each number to the nearest tens for a more accurate estimation.
(a) Cube: $16.40 ≈ $20
(b) Guitar: $49.80 ≈ $50
(c) Cushion: $25.10 ≈ $30
(d) Ball: $40.10 ≈ $40
50 + 30 = 80
80 is nearest to 75.70.
Total amount spent on the two items
= 49.80 + 25.10
= $74.90
To use up all her money to buy another 2 items, she cannot exceed $75.70.
The total amount of $74.90 is nearest to and less than $75.70.
So, Gillian bought (b) Guitar and (c) Cushion.
Answer(s): (a) b, c; (b) $74.90