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2.2: Estimate Decimal Sums and Differences Using Front-End Estimation

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

Decimal

In common use, a decimal refers to part of a whole number. The numbers to the left of a decimal point represent whole numbers, and each number to the right of a decimal point represents a fractional part of a power of one-tenth. For instance: The decimal value 1.24 indicates 1 whole unit, 2 tenths, and 4 hundredths (commonly described as 24 hundredths).

Front-End Estimation

Front-end estimation is a method of estimating where you only add the digits in the greatest place value.

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Dec 19, 2012
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