Addition trick. Add all in 2 seconds. #mathshorts #maths #mathstricks

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70 through to 79 added together is 745
There are ten 70s making 700
and 1 to 10 is 45 and the quick way to do that
is to split it into 10s 1+9 2+8 3+7 4+6 and 5

MrMousley
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După metoda arătată cam ar da rezultatul : 745!

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