There's an easy way to calculate it if you're ever get stuck or confused. Taking your example 6 x 8 = 6 x (10 – 2) = 6 x 10 – 6 x 2 = 60 – 12 = 48 , and the good part is you don't need a paper or calculator, you can calculate it in your head.

Let me meditate on this. XD

Oh, and about the calculators I was never allowed to used them in mathematics classes, except for two mathematical subjects in university where you really can't do anything without calculator  ;D

In basic school we weren't allowed either but in high school we were allowed. :D


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