Wendy spent less than $110. She already bought a toy helicopter at $21.50. 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 Wendy left to spend on the 2 items
= 110 - 21.50
= $88.50
Round off each number to the nearest tens for a more accurate estimation.
(a) Aeroplane: $46.80 ≈ $50
(b) Blocks: $27.10 ≈ $30
(c) Teddy bear: $41.40 ≈ $40
(d) Lego: $70.90 ≈ $70
50 + 40 = 90
90 is nearest to 88.50.
Total amount spent on the two items
= 46.80 + 41.40
= $88.20
To use up all her money to buy another 2 items, she cannot exceed $88.50.
The total amount of $88.20 is nearest to and less than $88.50.
So, Wendy bought (a) Aeroplane and (c) Teddy Bear.
Answer(s): (a) a, c; (b) $88.20