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# Fast Math Facts

### How to learn MATH FASTER and MORE FUN!

TermDefinition
Divisibility rule for 2 If a number is even
Divisibility rule for 3 If the sum of digits is divisible by 3
Divisibility rule for 4 If the last two digits are divisible by 4
Divisibility rule for 5 If number ends in 0 or 5
Divisibility for 6 Short Version If number is even and is divisible by 3
Divisibility rule for 9 If sum of digits is divisible by 9
Divisibility rule for 10 If last digit ends in 0
Exponents Tells us how many times the base is used as a factor
Base The number that we are multiplying
Power When we are multiplying a base times an exponent
Prime Number Has only two factors, 1 and itself
Composite Number Has more than two whole number factors
Prime Factorization Taking a composite whole number and breaking it down into its prime factors
Factors The numbers that we multiply
Equivalent Fractions Name same amount; equal