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4th Grade Fractions & Decimals
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Terms in this set (67)
Factor Pairs
2 factors that are multiplied together
2 x 3 = 6; 2 and 3 are ___
Factor Pair
Multiple
12 is a _____ of 3 because 3 x 4 = 12
Prime Numbers
A whole number with exactly 2 factors, 1 and itself
3 is a _____ because 1 x 3 = 3
Prime Number
Composite Numbers
A whole number with more than 2 factors
6 is a ________ because factors of 6 are 1, 2, 3, 6
Composite Number
Equivalent Fractions
Fractions that are equal. You can multiply and/or divide to find them
Steps to compare fractions
1 - Multiply the denominators to find a common denominator
2 - Multiply the numerator by the same number (or cross multiply)
3 - Compare the numerators
Steps to change a mixed number to an improper fraction
1 - Multiply the denominator by the whole number (the large number)
2 - Add the numerator
3 1/2 is 2 x 3 + 1 = 7 so 7/2
Steps to change an improper fraction to a mixed number
1 - Divide the numerator by the denominator
2 - The remainder is the new numerator
Remember the denominator always stays the same
7/2 is 7 divided by 2 which is 3 with a remainder of 1 so 3 1/2
convert
To change money, stocks, or units in which a quantity is expressed into others of a different kind.
improper fraction
a fraction in which the numerator is greater than or equal to the denominator
mixed number
A number represented by a whole number and a fraction
numerator
the top number in a fraction
The number written above the line in a fraction. It tells how many equal parts are described in the fraction.
denominator
The bottom number of a fraction
the number that represents how many pieces are in the whole
fraction
A number that names part of a whole.
factors
numbers that can be multiplied to equal a product
multiples
numbers you say when you skip count. Multiples of 2 are: 2,4,6,8,...
ex. multiples of 20 are 40, 60, 80, 100, ...
Products that result from multiplying the number by each of the whole numbers.
equivalent fractions
Fractions that have the same value
Fractions that may look different, but are equal to each other. Two equivalent fractions may have a different numerator and a different denominator. For instance, The fractions 2/3 and 4/6 are equivalent. (A fraction is also equivalent to itself. In this case, the numerator and denominator would be the same.)
prime
numbers that have only themselves and 1 as FACTORS
numbers that have EXACTLY TWO FACTORS
2, 3, 5, 7...
NOT 1
The only EVEN PRIME number is 2.
MM-original, ancient
composite
numbers that have MORE than two factors
MM-put together from many different parts
MM-A tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials
fraction
part of a whole
equivalent
when two fractions are equal
numerator
the top number in a fraction that shows how many parts in the whole
denominator
the bottom number in a fraction that shows how many equal parts the whole is divided into
mixed number
a whole number and a fraction combined
factor
numbers you multiply to get another number
benchmark fraction
a fraction you can use as a reference for other fractions
product
when two or more numbers are multiplied together
quotient
the number resulting from dividing one number by another
difference
the result of subtracting one number from another
Factor Pairs
2 factors that are multiplied together
2 x 3 = 6; 2 and 3 are ___
Factor Pair
Multiple
12 is a _____ of 3 because 3 x 4 = 12
Prime Numbers
A whole number with exactly 2 factors, 1 and itself
3 is a _____ because 1 x 3 = 3
Prime Number
Composite Numbers
A whole number with more than 2 factors
6 is a ________ because factors of 6 are 1, 2, 3, 6
Composite Number
Equivalent Fractions
Fractions that are equal. You can multiply and/or divide to find them
Steps to compare fractions
1 - Multiply the denominators to find a common denominator
2 - Multiply the numerator by the same number (or cross multiply)
3 - Compare the numerators
Steps to change a mixed number to an improper fraction
1 - Multiply the denominator by the whole number (the large number)
2 - Add the numerator
3 1/2 is 2 x 3 + 1 = 7 so 7/2
Steps to change an improper fraction to a mixed number
1 - Divide the numerator by the denominator
2 - The remainder is the new numerator
Remember the denominator always stays the same
7/2 is 7 divided by 2 which is 3 with a remainder of 1 so 3 1/2
convert
To change money, stocks, or units in which a quantity is expressed into others of a different kind.
improper fraction
a fraction in which the numerator is greater than or equal to the denominator
mixed number
A number represented by a whole number and a fraction
numerator
the top number in a fraction
The number written above the line in a fraction. It tells how many equal parts are described in the fraction.
denominator
The bottom number of a fraction
the number that represents how many pieces are in the whole
fraction
A number that names part of a whole.
factors
numbers that can be multiplied to equal a product
multiples
numbers you say when you skip count. Multiples of 2 are: 2,4,6,8,...
ex. multiples of 20 are 40, 60, 80, 100, ...
Products that result from multiplying the number by each of the whole numbers.
equivalent fractions
Fractions that have the same value
Fractions that may look different, but are equal to each other. Two equivalent fractions may have a different numerator and a different denominator. For instance, The fractions 2/3 and 4/6 are equivalent. (A fraction is also equivalent to itself. In this case, the numerator and denominator would be the same.)
prime
numbers that have only themselves and 1 as FACTORS
numbers that have EXACTLY TWO FACTORS
2, 3, 5, 7...
NOT 1
The only EVEN PRIME number is 2.
MM-original, ancient
composite
numbers that have MORE than two factors
MM-put together from many different parts
MM-A tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials
fraction
part of a whole
equivalent
when two fractions are equal
numerator
the top number in a fraction that shows how many parts in the whole
denominator
the bottom number in a fraction that shows how many equal parts the whole is divided into
mixed number
a whole number and a fraction combined
factor
numbers you multiply to get another number
benchmark fraction
a fraction you can use as a reference for other fractions
product
when two or more numbers are multiplied together
quotient
the number resulting from dividing one number by another
difference
the result of subtracting one number from another
tenths
The first place value after a decimal point.
.5
Write the number that names this.
subtract decimals
Line up the terms vertically by the decimal. Subtract using the normal algorithm, then drop the decimal into the difference.
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