MATHS Flashcards
1
Q
Perecentage
A
Number x 100 / total number
2
Q
Percentage increase
For 12 & 16
A
4 x 100/ 12
3
Q
Percentage decrease
For 12 & 16
A
4 x 100/ 16
4
Q
Calculate mean
A
Sum of value/ number of different values
5
Q
Mode
A
The va,ue that appear most ofeten in a set of values
6
Q
Median
A
Is the middle number of a set of value when they have been put in numerical order
7
Q
Percentahe error
A
Maximum error x 100 / measured value recorded
8
Q
Maximum error of ruler
A
0.5mm x 2 = 1mm
9
Q
Rate of change from graph
A
Change in Y / change in X
10
Q
Surface area of sphere
A
4r^2pi
11
Q
Volume of sphere
A
4r^3p/3
12
Q
Surface area of cylinder
A
2r^2 x pi + 2rh(pi)
13
Q
Volume of cylinder
A
Pi x r^2 x h
14
Q
Surface area of cube
A
6a^2
15
Q
Volume of cube
A
A^3
