0.786 to 2 decimal places is 0.79. When rounding a number to two decimal places, we look at the third decimal place. If it is 5 or greater, we round up the second decimal place. In this case, the third decimal place is 6, so we round up 0.78 to 0.79.
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for 2 d.p., firstly count the first two digits after the full stop, then look at the third. If the third place is equal to or greater than 5 then raise the second by 1, otherwise it stays the same.
The reasoning behind this is that it gives the closest reasonable result with a shorter number. For example, if you had $17.23 and somebody asked you how much you had, you would probably say "about $17, similarly for $43.78 you would likely say $44
Oh, dude, you're really making me do math right now? Fine, fine. 0.786 to 2 decimal places is 0.79. Like, I hope you're not planning on quizzing me on calculus next.
It is 4.97 rounded to 2 decimal places
Stated to 2 decimal places, it's 342.99Rounded to 2 decimal places, it's 343.00
Rounded to 2 decimal places 0.3081 is 0.31
0.0323
2356164.38 already has only 2 decimal places, so there is no need to round it.