The factors of 20 are one, two, four, five, 10, 20, negative one, negative two, negative four, negative five, -10 and -20. The prime factors of 20 are two, four and five.
Continue ReadingThe factors are the numbers multiplied together to get a certain number. For instance, one and 20 are multiplied together to get 20. Similarly, negative four and negative five can be multiplied together to reach 20 because multiplying two negative numbers makes a positive number. The prime factors are the most basic prime numbers that can be multiplied together to reach a number. In this case, two times two is equal to four, and four multiplied by five is 20.
Learn more about ArithmeticA factor rainbow is a way of writing factors for numbers using a series of arcs. It helps students ensure they have all the factors by listing them in consecutive order.
Full Answer >In mathematics, a prime number is any whole number greater than one that has no positive factors other than one and itself. For example, the number 17 is prime, because its only factors are one and 17.
Full Answer >In mathematics, the abbreviation "exp" stands for the word exponent. An exponent is a number placed after another number to indicate the power to which the former number is to be raised. The expression 5 exp 2, for example, means 5 raised to the second power or 5 x 5.
Full Answer >Simplifying in math generally refers to fractions. To simplify a fraction, find the highest number that divides into both the numerator, or the top number, and the denominator, or the bottom number. Then, divide that number into both parts of the fraction to simplify.
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