Term | Definition |
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 |
Numerator | Tells us the number of parts being asked about |
Denominator | Total number of equal parts |
Facts #1 | 1. When listing factors, you should never have a factor that is greater than the initial number.
2. Every even number that is greater than 2 is composite.
3. One is neither prime nor composite.
4. Divisibility rules help make division easier. |
Facts #2 | 5. They help us know if we will or will not have a remainder when dividing.
6. When listing the multiples of a number you should NEVER have a multiple less than that number. |
Multiple | The product of a number when multiplied by a counting number. |
Least Common Multiplfe | The smallest number. |
Fact #3 | 7. You're never going to be asked the least common factor and the greatest common multiple because 1. The number would be 1 & 2. Numbers are infinant. |
Divisibility Rule for 6
Long Version | If the number is even and the sum of the digits is divisible by 3, then the number is divisible by 6. |