Percentages 50 % and 10 %

Percentages

We are going to calculate simple percentages

What is a percentage?

• Percent means 'out of 100'

• Percentages are equivalent to decimals and fractions

Multiple Choice

Which symbol do we use for percent?

• &

• $

• %

• $\div$

We use % to represent percentage

Multiple Select

What is 50 % of £40

• 10

• 20

• 30

• 40

How do we find 50 %

We divide by.........

2

Lets quiz

3,2,1....

Multiple Choice

What is 50 % of 10

• 1

• 5

• 10

• 100

Multiple Choice

What is 50 % of 50?

• 50

• 25

• 20

• 10

Multiple Choice

20 is 50 % of what number?

• 20

• 10

• 100

• 40

Multiple Choice

50 is 50% of what number?

• 50

• 100

• 10

• 5

Multiple Choice

find 50% of 180

• 9
• .9
• 90
• 900

Multiple Choice

Another important percentage to find is 10 %.

How do we find 10 %?

• Divide by 2

• Divide by 10

• Divide by 50

• ~Divide by 100

Multiple Select

What is 20 divided by 10?

(Think how many 10's divide into 20!)

• 10

• 2

Multiple Choice

Calculate 10 % of 80

• 10

• 40

• 80

• 8

Multiple Choice

Calculate 10 % of 60

• 6

• 10

• 60

• 16

Multiple Choice

Calculate 10% of 120

• 100

• 10

• 120

• 12

Multiple Choice

What is 10% of £ 250

• £20

• £125

• £25

• £50

• £125

Multiple Choice

What is 10% of 730?

• 73

• 7300

• 350

• 735

Multiple Select

To find 10% - you must divide the original number by

• 100

• 10

Poll

How successful do you feel you have been finding 50% and finding 10%

• Super Happy with my work today

• Could do better - need a little more support

• Really struggled