Percentage Techniques
Simple calculations
not so simple
Applications
Percentage Change
100
Divide the amount by 2
What is to find 50%
100
10% of 250
What is 25
100
10% of 45.3
What is 4.53
100
GST is a ___% increase on the cost of items
What is 10%
100
Original price of $100, increased by $10 the percentage increase is
What is 10%
200
Move the decimal 2 places left
What is to find 1%
200
50% of 400
What is 200
200
33.3% of 7.2
What is 2.4
200
An decrease in the cost of an item
What is discount
200
A car bought for $500 is sold for $400 What is the percentage decrease?
What is 20%
300
Divide the number by 10 then double
What is to find 20%
300
25% of 480
What is 120
300
15% of 86
What is 12.9
300
At a 20% off sale, a shirt costing $25 is sold for
What is $20
300
An increase of 50 from an original of 5000 is an increase of ____%
What is 1%
400
Divide the number by 2, then by 2 again
What is to find 25%
400
5% of 840
What is 42
400
30% of 4.5
What is 1.35
400
During a sale, a shirt costing $30 is marked down by 30%. What is the sale price?
What is $21
400
Original $60, decrease $20 is what percentage?
What is 33.3%
500
Find 50% then take 5%
What is to find 45%
500
90% of 740
What is 666
500
85% of 10.8
What is 9.18
500
A product costing $200 before GST would be sold for
What is %220
500
Original price $300 New Price $400 Percentage change?
What is 33.3% increase
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