Joelle spent less than $90. She already bought a toy helicopter at $34.90. 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 Joelle left to spend on the 2 items
= 90 - 34.90
= $55.10
Round off each number to the nearest tens for a more accurate estimation.
(a) Blocks: $29.40 ≈ $30
(b) Cube: $21.90 ≈ $20
(c) Aeroplane: $50.70 ≈ $50
(d) Doll: $43.60 ≈ $40
30 + 20 = 50
50 is nearest to 55.10.
Total amount spent on the two items
= 29.40 + 21.90
= $51.30
To use up all her money to buy another 2 items, she cannot exceed $55.10.
The total amount of $51.30 is nearest to and less than $55.10.
So, Joelle bought (a) Cube and (b) Block.
Answer(s): (a) a, b; (b) $51.30