Examples for

Place Value

Place values indicate the position of a digit in a number. To the left of the decimal point, the first few place values are ones, tens, hundreds and thousands. Wolfram|Alpha can compute place values for both integers and decimals and can round numbers to any place value.
Place Value

Compute place value charts or find the place value for just one digit.

Show place values for a number:

place values of 6135
place values 28.075
place values of 27,305,664

Find the value of a particular digit of a number:

value of the digit 3 in 23904
value of 7 in 35.875
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Rounding

Apply rules for rounding numbers, including the special cases for rounding a half.

Discover the results of rounding a number to any place value:

round 2168 to the nearest 100
round 56.821 to the nearest ten
39.276 rounded to the nearest tenth
round 10.235 to the nearest hundredth

Examine half rounding methods:

round 1.5 half up
2.5 rounded half down
round {1.5, -2.5, 3.5} so half goes away from zero
4.5 round half toward zero
round {2.5, 5.5, 7.5} so half goes to the nearest odd number
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