Opal spent less than $80. She already bought a toy helicopter at $26.50. 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 Opal left to spend on the 2 items
= 80 - 26.50
= $53.50
Round off each number to the nearest tens for a more accurate estimation.
(a) Blocks: $33.80 ≈ $30
(b) Cube: $16.40 ≈ $20
(c) Aeroplane: $52.90 ≈ $50
(d) Doll: $41.20 ≈ $40
30 + 20 = 50
50 is nearest to 53.50.
Total amount spent on the two items
= 33.80 + 16.40
= $50.20
To use up all her money to buy another 2 items, she cannot exceed $53.50.
The total amount of $50.20 is nearest to and less than $53.50.
So, Opal bought (a) Cube and (b) Block.
Answer(s): (a) a, b; (b) $50.20