351 quadratic sequence a sequence of numbers in which the second difference between consecutive terms is the same; the highest power in the nth term rule is 2 (squared) 198 rational number any number that can be written as a fraction 10 ray lines lines that start at a fixed point and continue forever 292 recurring decimal in a recurring decimal, a digit or group of digits is repeated forever 163 regular polygon a polygon where all the sides are the same length and all the interior angles are the same size 107 relative frequency if an action is repeated, the relative frequency of a particular outcome is the fraction of times when that outcome occurs 264 scatter graph a graph showing linked values of two variables, plotted as coordinate points, that might or might not be related 324 scientific notation the same as standard form 14 sector a part of a circle formed by two radii and the part of the circumference joining their ends 87 simultaneous equations two or more equations, each containing several variables 89 solution set the set of numbers that form a solution to a problem 97 solve calculate the value of any unknown letter(s) in an equation 84 standard form a way of writing very large or very small numbers in the form a × 10n , where 1 ⩽ a < 10 and n is an integer 14 strategies methods 184 subject of a formula the letter that is on its own on one side (usually the left) of a formula 48 surd an irrational square root or cube root 10 terminating decimal a decimal number that does not go on forever 163 tonne a unit of mass such that 1 tonne = 1000 kilograms 153 upper bound the largest value that a rounded number could have been before it was rounded 75 SAMPLE We are working with Cambridge Assessment International Education towards endorsement of this title. Original material © Cambridge University Press 2021. This material is not final and is subject to further changes prior to publication.
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Math Y8
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