Zara spent less than $110. She already bought a toy helicopter at $21.70. 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 Zara left to spend on the 2 items
= 110 - 21.70
= $88.30
Round off each number to the nearest tens for a more accurate estimation.
(a) Aeroplane: $45.70 ≈ $50
(b) Blocks: $27.80 ≈ $30
(c) Teddy bear: $42.20 ≈ $40
(d) Lego: $71.30 ≈ $70
50 + 40 = 90
90 is nearest to 88.30.
Total amount spent on the two items
= 45.70 + 42.20
= $87.90
To use up all her money to buy another 2 items, she cannot exceed $88.30.
The total amount of $87.90 is nearest to and less than $88.30.
So, Zara bought (a) Aeroplane and (c) Teddy Bear.
Answer(s): (a) a, c; (b) $87.90