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2.7: Decimal Subtraction

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).

Decimal point

A decimal point is a period that separates the complete units from the fractional parts in a decimal number.

Difference

The result of a subtraction operation is called a difference.

Estimate

To estimate is to find an approximate answer that is reasonable or makes sense given the problem.

Magnitude

The magnitude of a number is the size of a number without respect to its sign. The number -35.6 has a magnitude of 35.6.

Place Value

The value of given a digit in a multi-digit number that is indicated by the place or position of the digit.

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:
At Grade
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Date Created:
Dec 02, 2015
Last Modified:
Sep 08, 2016
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