Tiffany spent less than $80. She already bought a toy helicopter at $30.30. 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 Tiffany left to spend on the 2 items
= 80 - 30.30
= $49.70
Round off each number to the nearest tens for a more accurate estimation.
(a) Blocks: $31.30 ≈ $30
(b) Cube: $15.40 ≈ $20
(c) Aeroplane: $50.30 ≈ $50
(d) Doll: $41.20 ≈ $40
30 + 20 = 50
50 is nearest to 49.70.
Total amount spent on the two items
= 31.30 + 15.40
= $46.70
To use up all her money to buy another 2 items, she cannot exceed $49.70.
The total amount of $46.70 is nearest to and less than $49.70.
So, Tiffany bought (a) Cube and (b) Block.
Answer(s): (a) a, b; (b) $46.70