Notes:
Question 1 )
a) you know how to answer this question
b) you know this question
c) 18 / 60 = 0.3
0.3 x 100 = 30
answer: 30
Question 2 )
a) I. 7 1/4
ii. 63 / 7 = 9
9 x 4 = 36
answer: 36
b) 4/5 = 0.8
7/9 = 0.77
answer: 4/5 is bigger because if you convert it into a decimal, the number is bigger.
c) 1/5 = 8/40 1/4 = 10/40
answer: 9/40
Question 3 )
a) 12.4 x 10 = 124 not 12.4
b) 6.45 x 4 / 3 = 8.6
answer: £8.60
Question 4 )
a) I. 3.2
ii. 115
b)
Question 5 )
a) you know how to solve this
b) you know how to solve this
Question 6 )
a) corresponding
b)
Question 7 )
1p coin - 3/10 = 6 / 20
6 x 1 = 6
2p coin - 2/5 = 8 /20
2 x 8 = 16
16 + 6 = 22
57 - 22 = 35
35 / 5 = 7
7 - 2 = 5
5/20 ( 5p coins )
1/20 ( 10p coins)
answer: 1p ( 6) , 2p (8), 5p (5), 10p ( 1)
Question 8 )
a) I. 11
ii. 1/16
b)
(3) to the power of 2
answer: 9
c) 5
Question 9 )
a)
7 x 5 = 35 hours
420 / 35 = 12
answer : 12
b)
I. 20% is reasonable because she is only missing out one day.
ii. 420 x 0.8 = 336
answer = £336
Question 10 )
a) I. 4 - n
ii. 2n
b) 4 x 4 / 3
answer: 16 /6
Question 11 )
a) 18,29
b) 7
c) y-x, x+y, 2y + x
Question 12 )
a) to make it easier to work out the area
b) 6400 x 3 = 19,200
answer: 19,200
Question 13 )
a) just look at the answers
b) 9 x 6 = 54
answer: 54
Question 14 )
30/330 = 1/11
answer : 1/11
Question 15 )
160 / 2.5 = 64
answer: 64
Question 16 )
8 + 3 = 11
(6400 + 16200) / 11
answer: yes
Question 17 )
a) x = y+3/7
b) I. you know how to solve this
ii. ( x+6)( x + 2)
Question 18 )
75 x 4 = 300
300 - (76 x 2 ) = 148
answer: 69.76,76,79
Question 19 )
a) 11/3: 5/2
answer: 22:15
b) 90 + 132 + 36 = 258
answer: 258
Question 20 )
Question 21 )
a)
b) all the sides are the same length
my answers:
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:
