4, 9, 16, 25, 36, 49, 64, 8 100, 12 144, 169.ABSOLUTE VALUETHE...

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169.

A

BSOLUTE

V

ALUE

The absolute value is the distance of a number from zero. For example, |−5| is 5 because −5 is 5 spaces fromzero. Most people simply remember that the absolute value of a number is its positive form.|−39| = 39|92| = 92|−11| = 11|987| = 987

F

ACTORS AND

M

ULTIPLES

Factors are numbers that divide evenly into another number. For example, 3 is a factor of 12 because it dividesevenly into 12 four times.6 is a factor of 669 is a factor of 27−2 is a factor of 98Multiples are numbers that result from multiplying a given number by another number. For example,12 is a multiple of 3 because 12 is the result when 3 is multiplied by 4.66 is a multiple of 627 is a multiple of 998 is a multiple of−2

R

ATIO

, P

ROPORTION

,

AND

P

ERCENT

Ratios are used to compare two numbers and can be written three ways. The ratio 7 to 8 can be written 7:8,

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