1 3.4308 x 10^-3 kg

2 £127.66 (to nearest pence)

3 x = 1.3 or x = -2.8 (to 1 dec. pl.)

4 190.8 metres

5 1.2 m³

6 (a) x =3.30 m (to 3 sig figs) (b) 0.8 m

7 41 tins

8 A: x = 23.6 ; B: x = 156.4

9 (a) £1.10 (b) Cost = 5m + 60 pence (c) Cost = 2m + 78 pence (d) 6 minutes

10 (a) (b) multiplied by 18

11 (a) n = 5 (b) 1 + 2 + 4 + 8 + 16 = 32 - 1 (c) 2ⁿ - 1

12 height of B is 3 metres

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