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2.1: Add and Subtract Decimals

Difficulty Level: Advanced Created by: CK-12
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Vocabulary

TermDefinition
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).
Estimate To estimate is to find an approximate answer that is reasonable or makes sense given the problem.
Rounding Rounding is reducing the number of non-zero digits in a number while keeping the overall value of the number similar.

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Difficulty Level:
Advanced
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Date Created:
Dec 19, 2012
Last Modified:
Feb 13, 2017
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MAT.ARI.210.L.4