Kathy spent less than $120. She already bought a toy helicopter at $21.60. 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 Kathy left to spend on the 2 items
= 120 - 21.60
= $98.40
Round off each number to the nearest tens for a more accurate estimation.
(a) Aeroplane: $51.90 ≈ $50
(b) Blocks: $31.30 ≈ $30
(c) Teddy bear: $43.90 ≈ $40
(d) Lego: $59.10 ≈ $60
50 + 40 = 90
90 is nearest to 98.40.
Total amount spent on the two items
= 51.90 + 43.90
= $95.80
To use up all her money to buy another 2 items, she cannot exceed $98.40.
The total amount of $95.80 is nearest to and less than $98.40.
So, Kathy bought (a) Aeroplane and (c) Teddy Bear.
Answer(s): (a) a, c; (b) $95.80