How to find a fraction of an amount!

As it’s the week of our NSPCC Number Day, Year 6 thought they would teach the world (via our blog) some maths strategies. Please take a look at Jazmine’s!

EXAMPLE: What is 2/3 of 150?

I will be showing you how to find a fraction of an amount!

1ST STEP

Take this as a note always divide by the denominator (3) then by multiply by the numerator (2). First you want to take the 3 then divide it by 150 (150 ÷ 3 = ?). If you can do 15 ÷ 3 then you can do 150 ÷ 3 just make it ten times bigger! The answer that you will get is 50.

2nd step

After you have done 150 ÷ 3, you now have to multiply 50 by the numerator (2). So now do 50 x 2 and if you know 5 x 2 you should know how to do 50 x 2 just make it ten times bigger! After you have done that you should end up with 100!

Answer!

Now after you multiply the number by the numerator (50 x 2 = 100) you will get your answer to your question! Now you know that 2/3 of 150 is 100!

Another example

2/4 of 160?

160 ÷ 4 = 40 16 ÷ 4 = 4

40 ÷ 2 = 20 4 ÷ 2 = 2

2/4 of 160 = 20

2 Comments

  1. Thank you Jazmine! That was really thorough and detailed. I have now learnt how to find a fraction of an amount!

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