Could anyone please explain the rules of rounding numbers? I screwed up on several questions because apparently my rounding techniques don't match ETS rounding.
Here how I do it, if it's 5 to 9 = > add 1
if 1-4, don't add one
so for example rounding 2.545 to tenth is 2.6
Though the rule you have written here is correct...where if its from 5 to 9 you round up (that is, add 1) and if its 1-4 you round down, the example you have given contradicts the same rule
2.545 will be rounded to 2.5 as the number following the digit '5' is '4' which means round down to 2.5...only a number 2.55 or greater can be rounded to 2.6. Anything less will be rounded down to 2.5.
hope that helps
but I previously thought that we need to round to the hundredth first so 2.545 becomes 2.55, and then to tenths, so 2.55 becomes 2.6. Apperently it's not right.