Questions:
a. A box of 12 popsicles costs $4.44. How much does it cost per popsicle?
b. A recipe takes 90 minutes to make. 25% of the time is spent preparing the ingredients. How many minutes are spent preparing?
c. How many millimetres are there in 3.5 metres?
d. Evaluate the expression. 64.3 - 3 × 2³ ÷ 2
Answer:
a. $0.37
b. 22 minutes 30 seconds
c. 3500 millimetres (mm)
d. 52.3
Explanation:
a. Cost per popsicle = $4.44 ÷ 12 = $0.37
b. Preparing time for recipe = 90 ÷ 100 × 25 = 22.5 minutes = 22 minutes 30 seconds
c. 3.5 m in mm = 3.5 × 100 × 10 = 3500 mm
1 m ⇒ 100 cm
1 cm ⇒ 10 mm
d. Based on the BIDMAS [ ( ), In, ÷, ×, +, - ]
64.3 - 3 × 2³ ÷ 2
= 64.3 - 3 × 8 ÷ 2
= 64.3 - 3 × 4
= 64.3 - 12
= 52.3