The following activity is a practice exercise to help you measure your success under timed conditions.
If you are unsure of an answer, move on to the next question.
You should come back to questions you found difficult at the end if you have time.
Let’s try one as a reminder and write the answer as a letter:
If a = 4, b = 125, c = 3, d = 11 and e = 7, what is d (c x a) - e?
Where there isn’t a -, +, x or ÷ between the first letter and the bracket, it means we have to multiply the outside number by what is in the brackets.
So the steps we follow are:
c x a = 12
d x 12 = 132
132 - e = 125
We must turn the number 125 back into a letter. This number corresponds to the letter b.
Now it's time to begin this practice exercise.