OCR GCSE MATHS NOVEMBER 2018: PAPER 2 FOUNDATION

notes:

Question 1 )

a) you know how to answer this question

b) 2

Question 2 )

a)  6

12 / 2 = 6

answer: 6

b) 1/5 = 0.2

8 x 0.2 = 1.6 

1.6 = 1 3/5

answer : 1 and 3/5

c)  1 - 1/6 =  5/6

3/5 - 5/6 = 7/30

Question 3 )

a) equiliteral

b)  i. rhombus

ii. rectangle

c)  5 faces and 8 edges

Question 4 )

a)   i.    1.22

answer:  1.22

ii.   1.3 - 1.13 = 0.17

answer: 0.17

iii.  8.47 / 7 = 1.21

answer: 1.21

b) 1.22

Question 5 )

a) i. 28

ii.  95

iii. 10kg = £4

4 x 180/10 = 72

answer: 72

b) the verticle scale is not linear

Question 6 )

36% =   36/100 =18/50 = 9/25

answer: 36% is bigger because when you convert to a fraction and simplify it is bigger than 7/20

Question 7 )

a) 3

b) 7 x7 = 49

answer: 49

c) 1/6

Question 8 )

£45 - £20 = £25

answer: £25

Question 9 )

a) x = y + 2

b)  d = C/ pi

Question 10 )

a) i.  x = 3

ii.  y = x

Question 11 )

770 / ( 5 + 4 + 2 ) = 70

5 x 70 = 350

4 x 70 = 280

2 x 70 = 140

answer : flour = 350g

                butter = 280g

               sugar = 140g

Question 12 )

a) 80 / 4 = 20

answer: 20

b) 20 x 40/2 = 400

Question 13 )

a) 3.16 x 10 to the power of - 3

b) 2 x 4 = 8

10 to the power 2   x   10 to the power of 5 = 10 to the power of 7

answer: 8 x 10 to the power of 7

Question 14 )

a) 19 and 31

b) 2,10.12

Question 15 )

a) 3x to the power of 2   +   xy    -   2y to the power of 2

b) 6x + 3d + cx + 5c = 10x + 17

6 + c = 10  c =4

3d + 5c = 17    d= -1

answer: c = 4 and d = -1

c) (x-2)(x-5)

answer: x = 2 and x =5

Question 16 )

a) 36 and 45

b) Even and Prime are not mutually exclusive. The correct answer is 8/12

Question 17 )

a)  57.8 - 54.2 = 3.6

3.6 / 0.3 = 12

answer: 12

b) the answer would be bigger

Question 18 )

a) 100 + 20 / 100

2400 x 1.2 = 2000

answer: 200

Question 19 )

Question 20 )

Question 21 )

pi x 6 to the power of 2 - pi x to the power of 2

answer: 36 pi  - pi x to the power of 2

my answers: