1. Mathsercise-C
Ready?
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Here we go!

2. 1 Increase £350 by 10% 10% of 350 is 35 350 + 35 = £385 Question 2
Remember 10% is one tenth
= £385
Answer 1
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3. Sale 20% off
How much would a jacket priced at £90, cost in the sale?
Question 3
20% of 90 is 18
Answer
= £72 2
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4. VAT is easy to work out by hand if you do the following..
The cost of a CD player is £200 + vat. The rate of vat is 17.5%.
What is the cost of the CD player?
Question 4
VAT is easy to work out by hand if you do the following..
Answer
10% of 200 = 20
5% of 200 = 10
2.5% of 200 = 5 35 3
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= £235

5. Now multiply by 100 to change it into percentage
A house cost £50,000 three years ago. I sold it for £90,000. What percentage profit have I made?
Start
90, ,000 = £40,000 profit
Now multiply by 100 to change it into percentage
Answer
40,000 ÷ 50,000 = 0.8
0.8 x 100 = 80% 4
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