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Math exam notes

1st quarter

integer a whole number that can be positive, negative, or zero
absolute value the distance of a number from zero
opposites numbers that are the same distance away from zero but, opposite sides of a number line
additive inverse when you add the value of the number to it and get zero (-3 + 3 = 0)
distributive property lets you multiply a sum by adding each addend seperatley and then add the products
order of operations an order in how to calculate numbers (PEMDAS)
rational number any number that can be written as a fraction
whole number any positive number that doesn't have decimals, or fractions
terminating decimal a decimal that doesn't go on forever
repeating decimal a decimal that goes on forever; repeated numbers
adding with different signs subtract and keep the sign of the number with the largest value
adding with the same signs add the numbers and keep the common sign
subtracting integers add the opposite (keep, change, change)
multiplying with different signs the product is always negative
multiplying with the same signs the product is always positive
dividing with different signs the quotient is always negative
dividing with the same signs the quotient is always positive
Created by: S732581nc