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Transcript

Chapter 7 Factor - numbers that are multiplied together to get a product Product - the answer to a multiplication problem. compatible number - numbers that are easy to compute mentally rounding - replacing a number with a number that is close to the original number and ends in zeros Chapter 8 Also know the divisibility rules factor - two numbers that you multiply together to get a product divisor a number that divides into another number 36 ÷ 6 6 is the divisor dividend the number that is divided by another number in the number above 36 is the dividend quotient - the answer to a division problem remainder the amount left over if it cannot be divided evenly multiplication and division are opposite operations example 8 x 4 = 32 and 32 ÷ 8 = 4 Prime numbers - numbers that only have 1 and itself as factors. 2 is the first prime number. (ex 7 is prime 1 x 7 are the only factors of 7) Composite numbers - numbers that have 2 or more factors. (example 15 has 1 x 15 and 3 x 5 )