Kathy spent less than $120. She already bought a toy helicopter at $38.60. 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 - 38.60
= $81.40
Round off each number to the nearest tens for a more accurate estimation.
(a) Cube: $22.70 ≈ $20
(b) Guitar: $45.40 ≈ $50
(c) Cushion: $33.90 ≈ $30
(d) Ball: $42.80 ≈ $40
30 + 40 = 70
70 is nearest to 81.40.
Total amount spent on the two items
= 33.90 + 42.80
= $76.70
To use up all her money to buy another 2 items, she cannot exceed $81.40.
The total amount of $76.70 is nearest to and less than $81.40.
So, Kathy bought (c) Cushion and (d) Ball.
Answer(s): (a) c, d; (b) $76.70