Fractions
Percentage increase and decrease
Algebra
Percentage problems
Trivia
100

Convert 0.25 to a simplified fraction

1/4

100

Find 20% of 50

10

100

Simplify: 3x+5x

8x

100

Increase 200 by 8%

216

100

What is the only even prime number?

2

200

Convert 3/5 to a decimal

0.6

200

Increase 80 by 10%

88

200

Evaluate 2x+3 when x = 4

11

200

Decrease 150 by 20%

120

200

Which planet is known as the Red Planet?
 

Mars

300

Write 35% as a decimal and a simplified fraction

0.35 and 7/20

300

A shirt costs $60 and is discounted by 15%. What is the sale price?

51

300

Expand: 3(x+5)

3x+15

300

A phone costs $500. It is increased by 10%, then discounted by 10%. Final price

500×1.1=550
550×0.9=495

300

How many hearts does an octopus have?

3

400

Convert 2/3 to a decimal. 

0.666...

400

A population of 800 increases by 10%, then decreases by 10%. What is the final population?

792

400

Factorise 18a+12

6(3a+2)

400

A price increases by 25% to $250. What was the original price

250÷1.25=200

400

What gets wetter the more it dries?

A towel

500

Arrange in ascending order

0.5, 3/5, 55%

0.5, 55%, 3/5

500

An item costs $130 including 10% GST.

Find the price before GST.

$118.18

500

Expand and simplify 

2(3x+4)−(x−5)

= 6x+8-x+5

=5x+13

500

A shop buys a pair of shoes for $80 and sells them for $100. What is the percentage profit?

percentage profit 25% 

500

What number do you get when you multiply all the numbers on a phone keypad?

0

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