When rounding to a specific place, take a look at the digit immediately to the right of the target. If that digit is 4 or less, zero everything to the right of the target out. If that digit is 5 through 9, increase the target by one and zero everything to the right of it out. If the target is a 9, increasing it will turn it to zero and increase the digit to the left of the target by one.
Round to the nearest decimal
Add your whole numbers
Only if you are rounding up to the nearest dollar. Normal rounding rules would make it 40.
That depends on the rounding rules used.
See related link below for a good explanation
Round to the nearest decimal
Rounding numbers is easy because their are two rules to rounding numbers. 1) a </= 4 then a = 0 2) a >/= 5 then a = 10
21.749
Add your whole numbers
Only if you are rounding up to the nearest dollar. Normal rounding rules would make it 40.
Using rounding rules, 13 is the nearest kilo.
That depends on the rounding rules used.
There are no set rules about rounding numbers, so when rounding numbers, mathematical rules about rounding can be used. For example, 14 would be rounded to 10, but 15 would be rounded to 20. For another example, 1144 is rounded to 1140 and 1145 is rounded to 1150.
See related link below for a good explanation
5 or more round up
If you’re rounding 34,700, here’s the scoop: To the nearest thousand: It bumps up to 35,000. To the nearest hundred or ten: It’s already sitting pretty at 34,700. Simple as that! Just depends on how tight you want those rounding rules.
Using the standard rules for rounding, 35 will be rounded to 40 as the nearest 10.