1. Prime Factorization
Prime Number - Has exactly 2 factors, 1 and the number itself
Composite Number - Any whole number greater than 1 with more than 2 factors
0 and 1 are neither prime nor composite
Prime Factorization - Every composite number can be expressed as a product of prime numbers - FACTOR TREE

2. Divisibility Rules A number is divisible by:
2 if the ones digit is even
3 if the sum of the digits is divisible by 3
5 if the ones digit is 0 or 5
6 if the number is divisible by 2 and 3
9 if the sum of the digits is divisible by 9
10 if the ones digit is 0

3. Equivalent Fractions-Two or more fractions that have the same quotient or that name the same region, part of a set, or part of a segment. ( 1/3 = 3/9)
Fraction-A number that represents part of a whole, part of a set, or a quotient in theform a/b which can be read as a divided by b
Like(common) Denominators-A whole number, greater than zero, that is the denominator of two or more fractions.
(2/7 and 3/7 have like denominators)

4. Lowest terms(simplest form)-The form of a fraction in which the numerator and denominator have no common factor except 1
Multiply(multiplication)-A mathematical operation of combining groups of equal amounts; repeated addition; the inverse of division.
Unlike denominators-Two or more fractions with unequal denominators.
(2/5 and 3/4 have unlike denominators)

5. 2/5 + 1/2
7/8 – 3/4
3 3/ /3
6 2/3 – 4 1/4
2/7 * 5/6
6 * 1/8
2 1/3 * 1 2/5
5/8 * 6/10 (Cross Cancel)
2/3 / 5/6
7 1/3 / 6

6. Mixed Number-A number composed of an integer and a proper fraction
Multiplicative inverse-The reciprocal of a number; in the set of real numbers the number a given number needs to be multiplied by to yield or equal 1.(7*1/7=1)
Repeating decimal-A decimal in which one or more digits repeat infinitely.
Terminating Decimal-A decimal whose digits do not repeat; all terminating decimals are rational numbers.