Using expressions in algebra

This task is about identifying an algebraic expression that describes a situation.

Question

a)  There are q monkeys in a zoo cage. Two of them are asleep.
     Which expression shows how many are awake?
    • q × 2

    • q - 2

    • q + 2

    • 2 - q

    • q ÷ 2

Question

b)  There are 5 tigers in a zoo. z of them are roaring for their dinner.
     How many are quiet?  
    • z × 5
       

    • z - 5

    • z + 5

    • 5 - z

    • 5 ÷ z

Question

c)  Michael is learning to play golf. His score was twice as much as his father's score.
     If Michael scored h shots, how many did his father score?
    • 2 × h

    • h - 2

    • h ÷ 2

    • 2 ÷ h

    • 2 - h