Common Core 4th Grade Math Vocabulary Fractions and Decimals

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Common Core 4th Grade MathVocabularyFractions
and Decimals
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decimal- A number with one or more digits to the
right of the decimal point Example 3.47
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decimal fraction- A decimal fraction is a
fraction where the denominator (the bottom
number) is a power of ten (such as 10, 100, 1000,
etc).43/100 is a decimal fraction and it can be
shown as 0.43
decimal point- A symbol used to separate dollars
from cents in money and to separate the ones
place from the tenths place in decimals Example
342.78
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Mixed Numbers-
denominator- The number below the bar in a
fraction. It tells how many equal parts are in
the whole. Example 5 8
denominator
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equivalent fractions- Two or more fractions that
name the same amount Example 1 2
3 2 4 6
Equivalent fraction
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factors- A number that is multiplied by another
number to find a productExamples 4 x 7
28The factors are 4 and 7.

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improper fraction- A fraction where the
numerator (the top number) is greater than or
equal to the denominator (the bottom number). In
other words, it is top-heavy. Example 5/3 (five
thirds) and 9/8 (nine eighths) are improper
fractions
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mixed number- A number represented by a whole
number and a fractionExample 2 ½ 4 ¾
Hundredth- One part of something divided into 100
equal parts. 1/100thExample 1 penny is a
hundredthth of 1 dollar
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numerator- The number above the bar in a fraction
that tells how many parts of the whole are being
considered Example 4 numerator
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proper fraction- A fraction where the numerator
(the top number) is less than the denominator
(the bottom number).Example 1/4 (one quarter)
and 5/6 (five sixths) are proper fractions.
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tenth- One part in a ten equal parts.
1/10thExample 1 dime is a tenth of 1 dollar
unit fraction- A fraction where the top number
(the "numerator") is 1 Example 1 1
1 4 6 8
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whole number- One of the numbers 0, 1, 2, 3, 4, .
. . The set of whole numbers goes on without end.