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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.

Q: What are the rules in rounding?

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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

Related questions

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.

5 or more round up

See related link below for a good explanation

Using the standard rules for rounding, 35 will be rounded to 40 as the nearest 10.

When you round numbers you need to remember the rounding rules. If a number is 5 or above you round up. It a number is 4 or below you round down.So:2,570,2782,570,2802,570,3002,570,0002,570,0002,600,000