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Wednesday, 9 December 2015

What I learnt in Maths

What I learnt in Maths:
The thing I learnt in Maths was how to solve subtractions quickly. 

Example:
234 - 549


200 + 30 + 4 - 500 + 40 + 9

200 - 500 = 300
30 - 40 = 10
4 - 9 = 5

10 + 5 = 15

300 + 15 = 315

1 comment:

  1. That is an awesome and really quick method! In future, when you will to do that quickly in your mind, you will be a genius:)

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