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Year 6 - Spring - Block 2

Percentages

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5

Complete the part-whole model.

How many different ways can you complete it?

Can you create your own version with different values?

100%

A

0.7

B

10%

C

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How many different fractions can you make using the digit cards?

How many of the fractions can you convert into decimals and percentages?

1

2

3

4

5

6

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Mo says,

Do you agree? Explain why.

To find 10% you divide by 10, so to find 50% you divide by 50

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

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10

Eva says to find 1% of a number, you divide by 100

Whitney says to find 1% of a number, you divide by 10 and then by 10 again.

Who do you agree with?

Explain your answer.

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Four children were asked to find 20% of an amount.

Whitney

Amir

Alex

Jack

Who do you think has the most efficient method? Explain why.

Who do you think will end up getting the answer incorrect?

I divided by 5 because 20% is the same as one fifth

I found one percent by dividing by 100, then I multiplied my answer by 20

I did 10% add 10%

I found ten percent by dividing by 10, then I multiplied my answer by 2

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How many ways can you find 45% of 60?

Use similar strategies to find 60% of 45

What do you notice?

Does this always happen?

Can you find more examples?

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What percentage questions can you ask about this bar model?

3.5

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A golf club has 200 members.

58% of the members are male.

50% of the female members are children.

How many male members are in the golf club?

How many female children are in the golf club?