Barbara spent less than $110. She already bought a toy helicopter at $36.20. 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 Barbara left to spend on the 2 items
= 110 - 36.20
= $73.80
Round off each number to the nearest tens for a more accurate estimation.
(a) Cube: $18.30 ≈ $20
(b) Guitar: $46.70 ≈ $50
(c) Cushion: $33.90 ≈ $30
(d) Ball: $39.60 ≈ $40
30 + 40 = 70
70 is nearest to 73.80.
Total amount spent on the two items
= 33.90 + 39.60
= $73.50
To use up all her money to buy another 2 items, she cannot exceed $73.80.
The total amount of $73.50 is nearest to and less than $73.80.
So, Barbara bought (c) Cushion and (d) Ball.
Answer(s): (a) c, d; (b) $73.50