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Chapter 2: Decimals

Chapter 2 Vocabulary


AB
decimala number that uses a decimal point
standard formall digits
word formnumbers are written as words
short-word formplaces are written as digits and the periods are written as words
expanded forma number written as a sum of the place value of its digits
roundto give an approximation to the nearest tenths, hundredths, thousandths etc.
exponenta number that tells how many times the base is used as a factor
negative power of tenA number in exponential form where the base is ten and the exponent is a negative integer
scientific notationa form of writing of a number as the product of a power of 10 and a decimal number greater than or equal to 1 and less than 10
inverse operationsoperations that "undo" each other such as addition and subtraction or multiplication and division except multiplication by 0
properties of equalityproperties that state performing the same operation to both side of an equation keeps the equation balanced