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21 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Place value
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Place value is the value of a digit depending on its place in a number.
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Exponents
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Exponents are shorthand for multiplication. You can write 2•2•2 as 2^3. 2 is the base and 3 is the exponent.
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Standard form
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A number written in standard form is 88,000.
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Scientific notation
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Scientific notation is a way of writing large (or small) numbers. 88,000 is 8.8 x 10^4.
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Scientific notation consists of a number greater than or equal to 1 and less than 10, x (multiplication sign), and a power of 10. To write a number in scientific notation, count how many places you must move the decimal point to get a number greater than or equal to 1 and less than 10. The number of places you move the decimal point is the power of 10.
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Factors
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Factors are the numbers you multiply to get another number.
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Divisible
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The number is divisible by the factor. For instance, the factors of 15 are 3 and 5, because 3×5 = 15. Some numbers have more than one factorization (way of being factored). For instance, 12 can be factored as 1×12, 2×6, or 3×4.
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Prime number
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A number that can only be factored as 1 times itself is called prime. The first few primes are 2, 3, 5, 7, 11, and 13. The number 1 is not regarded as a prime, and is usually not included in factorizations, because 1 goes in to everything.
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Composite number
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A composite number has more than two factors.
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Prime factorization
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The prime factorization of a number is the list of all the prime
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Greatest Common Factor (GCF)
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The greatest common factor (GCF) is the greatest number that is a factor of both of them.
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Least Common Multiples (LCM)
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The least common multiple (LCM) is the smallest number that is a common multiple of the given numbers.Note: The LCM is the largest number or a multiple of it.
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Fraction
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The symbol represents a fraction where n and d are whole numbers and d is not 0.
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Numerator
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The top number n is the numerator.
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Denominator
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and the bottom number b is the denominator.
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Equivalent
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If fractions represent the same quantity, they are equivalent.
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Lowest terms
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To write a fraction in lowest terms, divide both the numerator and the denominator by the greatest common factor of each number.
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Common denominator
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Fractions with the same denominator are said to have a common denominator.
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1/3
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means “one divided by 3” or “one part out of three parts”.
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Fractions and decimals
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Fractions and decimals are different ways of writing the same quantity.
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Terminating decimal
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A terminating decimal ends. (3/5)
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Repeating decimal
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A repeating decimal repeats a pattern of digits. (5/9)
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