Mammoth Memory

Maths Vocabulary Word Flash Cards

 

Our flash cards are a great way of testing if you've learned the meanings of the words in this section. Look at the words below and see if you can remember what each of them means.

If you get stuck, press "mnemonic" to show an image that should help you remember.

To check if you're right, or remind you if you've forgotten, press the card to flip it.

Go through the whole list to see how many word definitions you can recall. Practise until you're confident you can recall all of them.

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Integer
a whole number; a number which is not a fraction
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Irrational number
a number that cannot be written as a fraction. It is a decimal which is never ending
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Mean
a type of average found by adding up a list of numbers and dividing by how many numbers are in the list
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Median
the middle value when a list of numbers is put in order from smallest to largest; a type of average
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Mode
the most common value in a list of numbers; a type of average
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Obtuse angle
an angle that measures more than 90° but less than 180°
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Reflex angle
an angle greater than 180° but less than 360°
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Polygon
a two dimensional shape made of three or more straight sides
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Pi
a number that represents the ratio of a circle's circumference to its diameter; equal to 3.1415926
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Prime number
number greater than 1 that cannot be divided (except by itself and 1)
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Prime factorisation
breaking down a number into its smallest building blocks
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Lowest common multiple (LCM)
of a set of numbers is the smallest positive number that every number divides equally into exactly
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Highest common factor (HCF)
of a set of numbers is the highest positive number that divides exactly into every number in the set
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Prism
a 3D shape with the same cross section all the way along its length. The shapes that makes up the bases can only be polygons
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Quadratic equation
an equation which contains an X2 term
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Range
the spread of a data set; the difference between the highest and lowest values
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Rational number
a number that can be written as a simple fraction
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Reciprocal
the number another number must be multiplied by to get the answer 1
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Scalene triangle
a triangle in which all three sides have different lengths
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Segment (of a circle)
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