multiply by (something)

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multiply by (something)

1. To use multiplication according to a particular factor. Finally, we have to multiply by seven to find the solution. If you multiply by 0.33, you'll get the portion of your rent that you are allowed to write off as a business expense.
2. To use multiplication on a given number according to a particular factor. In this usage, a noun or pronoun is used between "multiply" and "by." Multiply that number by 10—that's how much you owe me now! If you multiply nine by any single digit, the product will always be two digits that, when added together, equal nine!
See also: by, multiply
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

multiply something by something

to use the arithmetic process of multiplication to expand numerically a particular number a certain number of times. Multiply the number of dependents you are claiming by one thousand dollars. Multiply 12 by 16 and tell me what you get.
See also: by, multiply

multiply by something

to use the arithmetic process of multiplication to expand numerically a certain number of times. To get the amount of your taxes, multiply by .025. Can you multiply by sixteens?
See also: by, multiply
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
Interobserver agreement (IOA) for determining the total number of critical points included in each lecture was calculated by dividing agreements by agreements plus disagreements and multiplying by 100%.
The lists generated by each observer were then scored for IOA by dividing agreements by agreements plus disagreements and multiplying by 100%.
Between two and 12 years, the average height is calculated by taking their age in years, multiplying by six and adding 77.
Average weight between one and six years is calculated by taking the age in years, multiplying by two and adding eight.
If your room has a ceiling higher than 8 feet, you can translate AHAM's square footages into cubic feet by multiplying by 8 (the ceiling height AHAM assumes).
If 2.5 is to be used, the same result can be obtained by multiplying by 4 and leaving off the last figure to the right.
Outlier predicted cost/case is calculated by identifying the number of days over the trim point for each RGN, multiplying by the SIW and a discount factor, and dividing by the total number of cases.
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