Printable · GCSE Foundation · ages 14-16

Inverse operations and priority of operations worksheet — GCSE Foundation

Fifteen questions on "inverse operations and priority of operations" — DfE statement N3. Print it, or print three versions so neighbours cannot copy by letter; the key gives the letter for each version.

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Inverse operations and priority of operations worksheet — GCSE Foundation

Maths · GCSE Foundation · N3 · Inverse operations and priority of operations · 15 questions

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1.Work out (−3) × 4 + 10
(a)−42
(b)−2
(c)−22
(d)22
2.Work out 100 − 4 × 5²
(a)0
(b)2400
(c)60
(d)−300
3.Work out 5 + 3 × (9 − 6)
(a)14
(b)24
(c)9
(d)26
4.Work out the reciprocal of (2 + 3)
(a)1/5
(b)5/6
(c)5
(d)−1/5
5.Grace works out 7 × 99 by writing 99 as 100 − 1. Use her method to work out 7 × 99.
(a)707
(b)700
(c)693
(d)699
6.Work out 3 × (−2)² − 5
(a)7
(b)−3
(c)31
(d)−17
7.Write down the reciprocal of 5/8
(a)−8/5
(b)8/5
(c)5/8
(d)3/8
8.Work out (−2)² − 3
(a)−7
(b)1
(c)25
(d)−1
9.A shop buys boxes of pens for £4 each. It sells each box on to a school for £3 more than it paid, and charges an extra £2 delivery fee for the whole order. A school orders 5 boxes. Work out the total cost of the order.
(a)£45
(b)£37
(c)£25
(d)£22
10.Work out √25 + 4² − 12 ÷ 3
(a)9
(b)17
(c)3
(d)37
11.A number is multiplied by 4, then 8 is added, giving the result 40. Work out the number.
(a)8
(b)128
(c)2
(d)12
12.Work out (−36) ÷ (−6) × 2
(a)3
(b)6
(c)12
(d)−12
13.A number is divided by 5, then 6 is subtracted, giving the result −1. Work out the number.
(a)25
(b)−5
(c)1
(d)−35
14.Work out 20 − 8 ÷ 2 + 1
(a)16
(b)15
(c)7
(d)17
15.Work out 18 − 4 × 2
(a)12
(b)−10
(c)10
(d)28

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