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Multiplying fractions by whole numbersMultiplying fractions by whole numbers
1. What are 4 lots of one quarter?2. What are 10 lots of one half?3. 0.25 x 84. 0.1 x 55. 0.5 x 36. ½ x 77. ¼ x 68. 1/5 + 1/5 + 1/5 + 1/5 = 1/5 x ….. = ……
9. 10 x 2/3
10.24 x ¼
Multiplying a fraction by a halfMultiplying a fraction by a half
What is ½ x ¼?
It is the same as a half of a quarter.
½ x ¼ = 1/8
What is 1/3 x ½ ?
What is 1/7 x ½ ?
Write down a method for multiplying by ½.
Multiplying a fraction by a quarterMultiplying a fraction by a quarter
What is 1/3 x ¼?
It is the same as a quarter of a third.
1/3 x ¼ = 1/12
What is 1/8 x 1/4 ?
What is 1/6 x 1/4 ?
Write down a method for multiplying by ¼.
Multiplying any two fractionsMultiplying any two fractions
1. Can you work out a method for ¾ of ½ ?You might want to use this diagram:
2. Can you use the same method to work out ¾ of 1/3 ?
What diagram would you need?
Multiplying any two fractionsMultiplying any two fractions
3. Work out 2/3 of ½ using this diagram:
4. Is this the same as ½ of 2/3? Explain.
5. Can you use the same method to work out 3/5 of 2/3 ?
What diagram would you need?
Multiplying any two fractionsMultiplying any two fractions
2/3 of ½ is the same as ½ of 2/3.
These are also the same as 2/3 x ½
and ½ x 2/3.
To multiply two fractions together, times the numerators together and the denominators together.
Example 2/5 x 6/7 = ……….