Barbara spent less than $120. She already bought a toy helicopter at $26.60. 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 Barbara left to spend on the 2 items
= 120 - 26.60
= $93.40
Round off each number to the nearest tens for a more accurate estimation.
(a) Aeroplane: $53.80 ≈ $50
(b) Blocks: $30.70 ≈ $30
(c) Teddy bear: $37.10 ≈ $40
(d) Lego: $61.70 ≈ $60
30 + 60 = 90
90 is nearest to 93.40.
Total amount spent on the two items
= 30.70 + 61.70
= $92.40
To use up all her money to buy another 2 items, she cannot exceed $93.40.
The total amount of $92.40 is nearest to and less than $93.40.
So, Barbara bought (b) Blocks and (d) Lego.
Answer(s): (a) b, d; (b) $92.40