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21st Feb 2018, 08:54

#6 (permalink)

sunnybunny

Join Date: Aug 2007

Location: uk

Age: 73

Posts: 94

Likes: 8

Received 10 Likes on 2 Posts

I could, I was taught mental arithmetic at primary school with the risk of a slippering if i got it wrong.

It's easy, divide by 2, and again and again. Half, quarter and eighth

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