Math In Year 9

Expressions & Formulae

100

Factorise

px+qx+py+qy = x(  ) + y (  )

x(p+q)+y(p+q)5(x+y)(p+q)

200

Factorise 

x² + 3x

x(x13)

300

Simplify

2a² + 7a²

9a²

400

Expand the brackets 

p(p+3q-5r)

p² + 3pq + -5pr

500

Expand and Simplify 

2 (x-3y) +3 (y-2z) +4 (z-5x)

-18x - 3y - 2z

Area, Perimeter & Volume

100

How do you find the area of a circle?

A = π r²

200

How to find volume of prism?

Area x height

300

How to find length of arc?

x/360 x π d

400

How do you find sector area?

x/360 x πr²

500

How do you find area of triangle?

A = 1/2b x h