Aisha and Daniel are preparing a school treasure hunt. Each expression gives the number of a clue. Work out each value.
- Find the value of 28 ÷ 47.
- Find the value of (85 – 43) ÷ 7 + 7.
Need a hint?
(a) Dividing by 47 is the same as multiplying by its reciprocal. (b) Resolve the bracket, then do the division before the addition.
Worked answer
- (a) 28 ÷ 47 = 28 × 74 = 49.
- (b) (85 – 43) ÷ 7 + 7 = 42 ÷ 7 + 7 = 6 + 7 = 13.
Answer: 13
The mistake this question tests
Habit
Calculation slip
Some pupils multiply 28 by 47 and get 16 instead of dividing. In (b), others add before dividing: 42 ÷ (7 + 7) = 3.
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