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16 Cards in this Set
- Front
- Back
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even number
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a number is even if it ends in a
0, 2, 4, 6, or 8. |
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whole number
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a number that contains no
decimals or fractions. |
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divisibility test
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a way to tell whether a whole number can be divided equally by another whole number, without actually doing the division
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factor
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a number being multiplied in a
multiplication problem |
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product
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the number that is the answer to a multiplication problem
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factor pair
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two factors of a number that multiplied together give you the number.
Ex. The factor pairs for 24 are: 1, 24; 2, 12; 3, 8; 4, 8 |
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factor rainbow
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a way to show factor pairs in a list of all the factors of a number
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factor string
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a string of numbers written a as product of at least 2 factors. It never contains the number 1!
ex. 2x3x4 is a factor string for 24 |
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prime number
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a number (greater than 1) that has exactly 2 factors, 1 and itself.
ex. 7 (only 1 x 7 = 7) |
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composite number
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a number that has more than two factors.
ex. 9 (1 x 9 = 9 and 3 x 3 both = 9) |
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prime factorization
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a number written as a product of factors that are all prime numbers.
ex. for 24: 2 x 2 x 2 x 3 (this is a prime factor string!) |
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factor tree
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a way to find all the prime factors of a number (a way to do prime factorization) by breaking down all the factors of a number until they are prime
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exponential notation
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a way of writing repeated multiplication by the same factor
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exponent
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the small raised number that tells you how many times you multiply the number by itself
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square number
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a number that is the product of a number and itself
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square root
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the number you multiply by itself to get a square number
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