Formulas

Question 1

Density

Answer 1

D=m/v

Question 2

Mass

Answer 2

m = dv

Question 3

Volume

Answer 3

v = m/d

Question 4

Speed

Answer 4

s = d/t

Question 5

Time

Answer 5

t = d/s

Question 6

Distance

Answer 6

d = st

Question 7

Find Pressure
when you have area and force

Answer 7

P = F/A
pressure = force/area

Question 8

Find Force
when you have pressure and area

Answer 8

F = PA

Question 9

Find force
when you have acceleration and mass

Answer 9

F = MA

Question 10

Find Area
when you have pressure and force

Answer 10

A = F/P

Question 11

Law of motion
Net force =?

Answer 11

F=MA

force = mass x acceleration

Question 12

Volume of a Cuboid

Answer 12

V of a cuboid = lwh

Volume = length x width x height

Question 13

Volume of a Cylinder

Answer 13

Volume of Cylinder = π r^2 h

Question 14

Where a is constant acceleration, u is initial velocity, v is final velocity, s is displacement from the position when t=0 and t is time taken:

v=?

Answer 14

Where a is constant acceleration, u is initial velocity, v is final velocity, s is displacement from the position when t=0 and t is time taken:

v=u+at

Question 15

When to use Pythagoras Theorem?

Answer 15

Use pythagoras theorem to find the hypotenuse (longest) side of a right angled triangle when the longest side is opposite the right angle.

a^2 + b^2 = c^2

Question 16

Formula to find the median average when there are a lot of items of data totalling an odd number?

Answer 16

(n + 1) /2

*n = total frequency

Question 17

Formula to find the median average when there are a lot of items of data totalling an even number?

Answer 17

n/2

*n = total frequency

Question 18

Area of a Square

Answer 18

A = s^2 (side length x side length)

Question 19

Area of Rectangle

Answer 19

Area of Rectangle = length x width

Question 20

Area of Triangle

Answer 20

Area of Triangle = 1/2 bh

Question 21

Area of Parallelogram

Answer 21

A = bh

Question 22

Surface Area of a Cuboid

Answer 22

area of a cuboid= 2lw + 2wh + 2lh

Question 23

Area of a cube

Answer 23

area of a cube = 6a^2

Question 24

Area of a prism

Answer 24

Area of prism = volume ÷ height

Question 25

What is the perimeter?

Answer 25

The measure of the total length around the outside of a shape.

Question 26

How to calculate percentage increase.

Answer 26

percentage increase = increase ÷ original number × 100 a) work out the difference between the two numbers being compared b) divide the increase by the original number and multiply the answer by 100

Question 27

How to calculate percentage decrease.

Answer 27

percentage decrease = decrease ÷ original number × 100 a) work out the difference between the two numbers being compared b) divide the decrease by the original number and multiply the answer by 100

Question 28

What is the quadratic equation?

Answer 28

Quadratics are algebraic expressions that include the term, x^2, in the general form, ax^2 + bx + c = 0 On the foundation course, any quadratic equation you’re expected to solve will always have a = 1 with all terms on one side and a zero on the other. https://mmerevise.co.uk/gcse-maths-revision/solving-quadratics-factoring/

Question 29

What is the equation for any straight line on a graph?

Answer 29

y = mx + c

Question 30

How do you determine how many degrees there are in a square, pentagon, hexagon....?

Answer 30

Count the sides and minus 2 (this shows how many triangles there are within the shape) then multiply by 180 degrees.