Notes:

Question 1)

c) 1/5

Question 2)

8400 x 0.12 = 1,008

(1,008 x 3) + 8400 = 11,424

answer: 11,424

Question 3)

b) z = 14 or z = -14

Question 4)

Question 5)

Question 6)

a)  i.  Certain

ii. evens

b) i. 6

ii. 21/55

iii. 28/55

Question 7)

11 x £15.65 = £172.15

£403.51 - 172.15 = 231.36

231.36 / 24 = 9.64

answer: 9.64

Question 8)

a) 50 / 40 = 1.25

720 / 1.25 = 576

answer: 576

b) 50 x 2 = 100

20 x 4 = 80

10 x 9 = 90

5 x 12 = 60

100 + 80 + 90 + 60 = 330

330 / 1.17 = 282

answer: 282

Question 9)

Question 10)

a) i. 15,11

ii. 38 and 193

b) 4n + 1

Question 11)

a) 380/1000 x £2 = 0.76

answer: 0.76

b) 280/ 20 = 14

answer: 14

Question 12)

2 x ( 12 + 15 + 7.4 ) = 68.8

answer: 68.8

Question 13)

a)  12.65 < m < 12.75

b)

Question 14)

b) Rotation centre (0,0) 90 clockwise

Question 15)

Question 16)

a) ii. No, because the markings in relevant region are above 2mm

Question 17)

a)

Question 18)

Question 19)

Question 20)

Question 21)

Question 22)

my answers: