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Round

WMA link

Round[expr]

rounds expr to the nearest integer.

Round[expr, k]

rounds expr to the closest multiple of k.

• • Round[10.6]

• • Round[0.06, 0.1]

• • Round[0.04, 0.1]

Constants can be rounded too

• • Round[Pi, .5]

• • Round[Pi^2]

Round to exact value

• • Round[2.6, 1/3]

• • Round[10, Pi]

Round complex numbers

• • Round[6/(2 + 3 I)]

• • Round[1 + 2 I, 2 I]

Round Negative numbers too

• • Round[-1.4]

Expressions other than numbers remain unevaluated:

• • Round[x]

• • Round[1.5, k]