Gem spent less than $120. She already bought a toy helicopter at $25.20. 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 Gem left to spend on the 2 items
= 120 - 25.20
= $94.80
Round off each number to the nearest tens for a more accurate estimation.
(a) Aeroplane: $52.10 ≈ $50
(b) Blocks: $27.80 ≈ $30
(c) Teddy bear: $40.40 ≈ $40
(d) Lego: $59.50 ≈ $60
50 + 40 = 90
90 is nearest to 94.80.
Total amount spent on the two items
= 52.10 + 40.40
= $92.50
To use up all her money to buy another 2 items, she cannot exceed $94.80.
The total amount of $92.50 is nearest to and less than $94.80.
So, Gem bought (a) Aeroplane and (c) Teddy Bear.
Answer(s): (a) a, c; (b) $92.50