Tina spent less than $110. She already bought a toy helicopter at $33.60. 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 Tina left to spend on the 2 items
= 110 - 33.60
= $76.40
Round off each number to the nearest tens for a more accurate estimation.
(a) Cube: $17.90 ≈ $20
(b) Guitar: $46.60 ≈ $50
(c) Cushion: $28.50 ≈ $30
(d) Ball: $39.80 ≈ $40
50 + 30 = 80
80 is nearest to 76.40.
Total amount spent on the two items
= 46.60 + 28.50
= $75.10
To use up all her money to buy another 2 items, she cannot exceed $76.40.
The total amount of $75.10 is nearest to and less than $76.40.
So, Tina bought (b) Guitar and (c) Cushion.
Answer(s): (a) b, c; (b) $75.10