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Fast Math Facts
How to learn MATH FASTER and MORE FUN!
| 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. |