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.Find the missing number: 17 × ▢ = 391
(a)23
(b)374
(c)17
(d)6647
2.Work out 2 × (−3 + 7)
(a)1
(b)6
(c)−20
(d)8
3.Work out ((−3) + 5) × (−4) − (−6) ÷ 2
(a)−11
(b)−1
(c)−5
(d)11
4.Work out (−6) + (−4) × 3
(a)−30
(b)−18
(c)18
(d)6
5.Insert one pair of brackets into 2 + 3 × 5 − 1 so that the calculation is equal to 24. Which calculation is correct?
(a)(2 + 3 × 5) − 1
(b)(2 + 3) × 5 − 1
(c)2 + 3 × (5 − 1)
(d)(2 + 3) × (5 − 1)
6.Write down the reciprocal of 0.2
(a)−0.2
(b)0.8
(c)5
(d)0.5
7.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
8.Work out √25 + 4² − 12 ÷ 3
(a)9
(b)17
(c)3
(d)37
9.Work out (−2)² − 3
(a)−7
(b)1
(c)25
(d)−1
10.Work out 36 ÷ (2 × 3)
(a)216
(b)54
(c)6
(d)18
11.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
12.Work out the value of √(16 + 9)
(a)5
(b)12
(c)7
(d)−5
13.Work out 3 × (−2)² − 5
(a)7
(b)−3
(c)31
(d)−17
14.Work out 100 − 4 × 5²
(a)0
(b)2400
(c)60
(d)−300
15.Work out (−3) × 4 + 2 × (−5)
(a)−22
(b)50
(c)−2
(d)22

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