Unit Conversions
Geometry
Financial Math
Algebra
Brain Busters
100

What is 25% of 80

20


100

What is the area of a rectangle with length 9cm and width of 6cm

54cm^2

100

A shirt costs $80 and is 20% off. What is the sale price

$64 

100

x +8= 15

x=7

100

A sector has an angle of 90 degrees and a radius of 67mm what is the perimeter to 2dp

239.24mm

200

round 18.967 to 2 dp

18.97

200
A circle has a radius of 7cm. Find its diameter

14cm

200
simple interest formula 

I= PRN

200

3x= 24

x=8

200

Amaya Papaya wants to buy a new car. She borrows $67,000 at 5.8% p.a. simple interest for 8 years

Calculate the total simple interest paid by Amaya over 8 years

$31,088.00

300

what is 15^2 (15 squared)

225

300

A triangle has angles of 55° and 65°. Find the third angle.

 60°

300

You earn $22/hour for for working 25 hours, time and a half for 6 hours and double time after that

how much do you earn after working 35 hours in the week?

$924.00

300

solve of x:

 4(x+5) = 36

x=4

300

What is the holiday loading equation

17.5% x normal week pay x number of weeks

400

what is the square root of 784 

28

400

Find the circumference of a circle with diameter 10 cm. (Leave in terms of π.)

10π cm

400

Sue heck earns $146, 670 per year

Calculate her taxable income 

$35,605.90

400

Solve

 2x-5= 7

x= 7

400

What is the appreciation equation

FV= PV(1+R)^n

500

Square root of 7921

89

500

A rhombus has a length of 4cm and a width of 2cm. what is the area

4cm^2

500

Sue Heck got fired for trying too hard. Now she earns $67,000

She has to pay a 2% medicare levy 

Calculate her taxable income and then her 2% mediare levy

$10,888.00 --> $217.76

500

expand and simplify:

2(x+7) = 6(x+4)

2x +14= 6x +24

-4x = 10


500

What is the equations for a trapezium?

h/2 (a+b)