B

Difficulty Rating

1/10

Question 2

0.006

1. If not sure, remove the zeros. So make it 20 * 3 = 60 (ie multiply both numbers by the same amount until the zeros are removed. This would be x100)
2. Then , because you removed 3 0s, you need to add these back in.
3. So the 60 because 0.006

5/10

A

Difficulty Rating

5/10

Question 4

12

1. The first even multiple of 7 is 14. The first prime number is 2

Difficulty Rating

4/10

Question 5

C

1. 5((6*9)+(7*3)-(8*6))
2. This gives 5(54+21-48)
3. This gives 5(27)

7/10

C

(22-10+8) / 4

5/10

A

Difficulty Rating

3/10

Question 8

A

1680 = 1680

Quick way is you are doubling the 24 to get to 48 on the other side. Then halving the 70 and getting 35 on the other side. So no calculations required in this question

Difficulty Rating

5/10

Question 9

C

The answer would be the highest factor of both 8 & 20 from the options since each tile is square. The answer to this is 4

Difficulty Rating

4/10

Question 10

A

100 is not a multiple of 3

Difficulty Rating

4/10

Question 11

C

15 pens cost £4.65

19 pens cost x

x = (19 * 4.65)/15

Difficulty Rating

7/10

Question 12

A

Work backwards. 23 – 3 = 20. Divide by 4 and you get 5

Difficulty Rating

4/10

Question 13

B

2Triangles = 1 Hex minus 1 Square = 6-4 =2

So a triangle = 1

Difficulty Rating

10/10

Question 14

B

Number of grey tiles = 2*n where n=shape number

So for Shape 3, it would be 2*3 = 6 grey tiles

28 grey tiles = 2 * n so n = 14. Shape 14

For Shape 14, white tiles = (n+1) = 15

7/10

D

6/10

D

6/10

D

8/10

C

4n+4 = 5n-2

n=4+2

n=6

Difficulty Rating

8/10

Question 19

78000

Number of words = 256 * 33 * 9

Estimate = 260 * 30 * 10

= 78000

Difficulty Rating

7/10

Question 20

9

987654321 – 987654312 = 9

6/10