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Maths GCSE Exam Word
Words that you need to understand for your GCSE exam
| Term | Definition |
|---|---|
| Equilateral Triangle | A triangle where all sides and angles are the same. Each angle is 60 degrees |
| Isosceles Triangle | A triangle with 2 sides and 2 angles are the same. |
| Perpendicular | When 2 lines meet at a right angle (90 degrees) |
| Parallel | Where two lines go in the same direction (so they never meet). We show this with an arrow. |
| Measure | Use your ruler and/or protractor to measure the angle or the line |
| Scale drawing | Diagram is drawn accurately, so you will need to measure something. Use the given scale to find real life distances. |
| Not drawn to scale | You cannot measure. You must use facts e.g. angle facts. |
| Bearing | An angle from north, measured clockwise. It must be given as 3 digits. |
| Product | Times/ multiply |
| Sum | Add |
| Difference | Takeaway |
| Product of prime factors | Do the factor tree |
| a<b | a is less than b |
| x > y | x is greater than y |
| nth term | The formula that works out each term in the sequence. if it goes up in 2s it will start with 2n. |
| Area | The space inside a shape: use a formula or count squares inside |
| Perimeter | The distance around the shape (add all the sides) |
| Volume | The space inside a 3D shape. Count the cubes, or use a formula. |
| Prism | A 3D shape with a cross section going all the way through |
| Solve | Work out the value of the letter (reverse the process) |
| Expand | Multiply out the brackets |
| Factorise | Put brackets back in |
| Simplify (algebra) | Collect like terms (there should be no times or division signs left) |
| Estimate | When estimating A CALCULATION round all the numbers first to 1 significant figure |
| Significant figure | The first non zero number e.g. 235 to 1 significant figure is 200. To two significant figures is 240 |
| Decimal place | The numbers after the point. e.g. 23.578 to 1 decimal place is 23.6 |
| Correlation | Relationship. As on thing rises, if the other rises its a positive correlation. As one thing rises, if the other goes down its a negative correlation. |
| Mean | Add and divide by how many there are |
| Median | Put in order, find the middle |
| Range | Biggest - Smallest |
| Mode | Most common |
| Factor | A number that goes into another number e.g. 2 is a factor of 10 |
| Multiple | A number in a timestable e.g. 25 is a multiple of 5 |
| Odd | Not in the 2 x table |
| Even | IN the 2 x table |
| Cube number | From multiplying a number by itself 3 times |
| Square | From multiplying a number by itself |
| Prime | Only has two factors: 1 and itself |
| Simplify (fractions/ ratios) | Divide both numbers by the same number until you have the smallest possible numbers |
| Ratio | Numbers that compare parts, written with : |
| Percentage | Out of 100 |
| Assumption | What have you imagined about the situation that you haven't been told about, that could effect your answer if its not what you imagined? |
Created by:
ethompson01
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