Abi spent less than $90. She already bought a toy helicopter at $34.40. 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 Abi left to spend on the 2 items
= 90 - 34.40
= $55.60
Round off each number to the nearest tens for a more accurate estimation.
(a) Blocks: $30.30 ≈ $30
(b) Cube: $22.50 ≈ $20
(c) Aeroplane: $52.90 ≈ $50
(d) Doll: $41.60 ≈ $40
30 + 20 = 50
50 is nearest to 55.60.
Total amount spent on the two items
= 30.30 + 22.50
= $52.80
To use up all her money to buy another 2 items, she cannot exceed $55.60.
The total amount of $52.80 is nearest to and less than $55.60.
So, Abi bought (a) Cube and (b) Block.
Answer(s): (a) a, b; (b) $52.80