MATHS

Question 1

Perecentage

Answer 1

Number x 100 / total number

Question 2

Percentage increase
For 12 & 16

Answer 2

4 x 100/ 12

Question 3

Percentage decrease
For 12 & 16

Answer 3

4 x 100/ 16

Question 4

Calculate mean

Answer 4

Sum of value/ number of different values

Question 5

Mode

Answer 5

The va,ue that appear most ofeten in a set of values

Question 6

Median

Answer 6

Is the middle number of a set of value when they have been put in numerical order

Question 7

Percentahe error

Answer 7

Maximum error x 100 / measured value recorded

Question 8

Maximum error of ruler

Answer 8

0.5mm x 2 = 1mm

Question 9

Rate of change from graph

Answer 9

Change in Y / change in X

Question 10

Surface area of sphere

Answer 10

4r^2pi

Question 11

Volume of sphere

Answer 11

4r^3p/3

Question 12

Surface area of cylinder

Answer 12

2r^2 x pi + 2rh(pi)

Question 13

Volume of cylinder

Answer 13

Pi x r^2 x h

Question 14

Surface area of cube

Answer 14

6a^2

Question 15

Volume of cube

Answer 15

A^3

Question 16

Surface area of circle

Answer 16

Pi x r^2

Question 17

Circumference of a sphere

Answer 17

4 x pi x r^2

Question 18

Diameter of circle

Answer 18

2r

Question 19

Scale

Answer 19

m - cm - mm - hm - nm

Question 20

1m=?nm

Answer 20

1000,000,000

Question 21

1cm^2= ?mm^2

Answer 21

100

Question 22

1cm^3 = ?mm^3

Answer 22

1000