| A | B |
|---|
| Irrational Number | look for the square root of an non-perfect square OR Pi |
| Prime Factorization | Do a factor tree until all numbers are prime. Check your answer choices on the calculator!!! |
| Scientific Notation | negative exponent means a small number (.00023), positive exponent is a big number (23,000,000) AND the first number needs to be between 1 and 10 |
| Exponential Form | leave the same base number and change the exponent |
| Range | Largest number - smallest number |
| Greatest Common Factor | MUST be smaller than all of the numbers!! It is the biggest number you can divide into all of the given numbers without a remainder |
| Complementary Angles | Will equal 90 degrees. (subtract given angle from 90 degrees) |
| Least Common Multiple | MUST be larger than all of the given numbers, see if all of the numbers in the question can divide evenly into the answer choices. |
| Supplementary Angles | Angles must equal 180 (SUBTRACT given angle from 180) |
| Pythagorean Thereom | Only use this formula when finding a missing SIDE!! or proving a right triangle |
| Distributive Property | 2(2x + 5) = 4x + 10 |
| Terminating Decimal | a decimal that ends |
| Unit Price | DIVIDE price by the number of items |
| Best Buy | the item with the lowest unit price |
| Y-intercept | Where a line crosses the Y-axis |
| Formula for area of a triangle | (b x h) / 2 |
| Formula for area of a square | side squared |
| formula for the volume of a rectangular prism | l x w x h |
| Diameter of a circle | DOUBLE the radius |
| Radius of a circle | r |
| mean | average of a set of numbers (add all of the numbers then divide by how many numbers there are) |
| median | MIDDLE number (Don't forget to put them in order first!!!) |
| mode | Number seen MOST often |
| outlier | A number that doesn't fit in with the rest of the numbers ( 22, 25, 21, 16, 14, 17, 99 -- 99 is an outlier |
| Probability without replacement | MULTIPLY two ratios (make sure the bottom number goes down by 1 in the second ratio) |
| To predict a probability | Make a WORD ratio and solve |
| Map scale | MAKE a WORD ratio and solve |
| Converting amounts | MAKE a WORD ratio and solve |
| Proportion for circle graphs | % / 100 = x / 360 |
| < | less than with an OPEN CIRCLE |
| Algebra | You are always trying to get "x" alone. First look to see if you need to combine like terms, then solve for x |
| Double line or bar graph | BE careful and READ the directions. The categories go on the bottom (usually the first column: days of the week, game numbers, years) and what they are counting goes on the side. YOU MUST start at zero. |
