## MULTIPLY BY DOUBLE |

## DOUBLE, MULTIPLY BY 2 |

If you are talking about making a number twice as large, the expression is “double” or “multiply by 2”: “double your sales to multiply your income by 2.”

You could properly say “increase by a 100%” to mean the same thing, but lots of people won’t understand that.

And definitely do not confuse people by saying “multiply by double.”

See also “divide by half.”