Question 1 )
a) you know how to answer this question
b) i. Germany
ii. 25
iii. 6
Question 2 )
a) cylinder
b) put a 90-degree angle on the right
Question 3 )
320 x 1.14 = 364.80
answer: 364.80
Question 4 )
a) I. 20
ii. 5
iii. 11
iv. 27
b) 7
Question 5 )
a) 1 : 19
b) 8 x 1.5 = 12
answer: 12
Question 6 )
a) x = 10
b) x = 4
Question 7 )
a) 81.5
b) 0.00569
Question 8 )
y = x / 3 + 9
Question 9 )
140 / 7 = 20
4 x 20 = 80. 3 x 20 = 60
80 / 5 = 16 60 / 4 = 15
answer: 15
Question 10 )
Question 11 )
a) (2,4)
b) you can answer this question
Question 12 )
8 + ( 3 x 5 ) = 23
answer: 23
Question 13 )
circumference of a circle = pi x diameter
pi x 10 = 31.41
answer: 31.42
Question 14 )
a) i. x = 7
ii. x = 12
b) 9x ( 2x + 1 )
Question 15 )
a)
Question 16)
5x + 3 + 7x + 4 + 9x - 10 + 2x + 3 + 5x + 8 = 28x + 8
(28x + 8) / 4 = 7x + 2
answer : 7x + 2
Question 17 )
2pm - 8:30pm = 6.5 hours
12 x 6.5 = 78
78 x 2 = 156 ( thursday and friday)
12 x 1.5 = 18
18 x 5 = 90 ( Saturday)
156 + 90 = 246
answer: £246
Question 18 )
20, 40, 80 , 100 , 120 , 140
35 , 70 , 105 , 140
LCM = 140 minutes
140 minutes = 2 hours and 20 minutes
8:30 + 2 hours and 20 minutes = 10:50
answer : 10:50
Question 19 )
Question 20 )
square root 30 to the power of 2 minus 8.4 to the power of 2
answer : x = 28.8
Question 21 )
60 x 2.25 = 135
135 - 125 = 10
10 / 125 = 0.08
0.08 x 100 = 8
answer: 8
Question 22 )
Question 23 )
6400 x 1.025 to the power of 8 = 7,797.78
6400 + 6400 x 0.027 x 8 = 7782.4
7,797.78 - 7,782.4 = 15 .38
answer: 15.38
Question 24 )
a) you know how to answer this question
b) 0.4 x 0.3 = 0.12
answer: 0.12
Question 25 )
7r + 15c = 7.00
7 ( c + 0.12 ) + 15 = 7.00
7c + 0.84 + 15c
15c + 7c = 7.00 - 0.84
22c = 6.16
c = 0.28
answer : 0.28
Question 26 )
33 - 5n
Question 27 )
a) Laptop both Ipad neither
19 12 36 5
b) 19 + 12 + 36 + 5 = 72
answer: 36 /72
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:
