Factor: a whole number that divides evenly into another whole number

          Ex: 15 (1,3,5,15)

Greatest Common Factor: the greatest number that is a factor of two or more whole numbers.

          Ex: 8  and 12  (1,2,4,8)   (1,2,3,4,6,12)  GCF=4

Multiple: of a whole number can be found by multiplying the number by any other whole number.

          Ex: 5    (5,10,15,20,.......)

Least Common Multiple: the smallest number that is a multiple of two or more whole numbers.

          Ex: 4  and  6  (4,8,12,16,20,.......)    (6,12,18,24,........)   LCM=12

Fraction: a ratio that compares a part to a whole.

          Ex: 1/2   (one of two parts)

Percent: a ratio that compares a number to 100.

          Ex: 60%  (60 out of 100)

Communitative Property: a rule stating the order of adding or multiplying does not change the answer.

          Ex: 7 + 8 = 8 + 7       or        6 x 3 = 3 x 6

Associative Property: a rule about the way numbers are grouped. The sum or product of a set of numbers is the same even when the grouping is changed.

          Ex: (4+6)+5=4+(6+5)    or      (3x2)x1=3x(2x1)

Order of Operations: the order in which to solve problems.

          1. Parentheses

          2. Exponents

          3. Multiplication or Division

          4. Addition or Subtraction

Triangles: 3 sided-polygon

         Types of triangles based on lengths of the sides

                 1. Scalene: no sides are equal

                 2. Isosceles: 2 sides are equal

                 3. Equilateral: all sides are equal

          Types of triangles based on angles

                 1. Acute: all angles are acute

                 2. Obtuse: one angle is obtuse

                 3. Right: one right angle

                 4. Equiangular: all angles are equal

All three angles of a triangle add up to 180 degrees.

Reducing Fractions: putting fractions in their lowest terms

        To reduce a fraction, find the GCF of the numerator and denominator. Then divide the numerator and denominator by that GCF.

Ordering Fractions: make equivalent fractions so that the denominators are the same. Then order the fractions based on the numerators.

Ordering Decimals: Order the whole numbers. Put zeros behind any decimals needed so that all decimals have the same number of digits after the decimal point. Then order according to the numbers after the decimal point.

Exponents: shows repeated multiplication of the same number.

        Ex: 2 to the 2nd power mean 2x2                       or                        3 to the 4th power means 3x3x3x3