Page 199 - Mathematics Coursebook
P. 199
Glossary
mixed number a number expressed as percentage a fraction written out of 100,
the sum of a whole number and a proper as ‘per cent’; a quarter is 25% 113
fraction 80 perimeter the length of the boundary of
modal relating to the mode. For example, a !at shape (perimeter of a circle is called a
the modal age. 105 circumference) 171
modal class the class with the highest perpendicular lines meeting or crossing at
frequency 105 right angles 60, 121
mode 'e most common number in a set 105 pictogram simple graph made up of
multiple the result of multiplying a pictures or symbols to represent information 181
number by a positive integer; the "rst few pie chart a circle split into sectors, each
multiples of 3 are 3, 6, 9, 12, … , … 11 sector represents its share of the whole 185
mutually exclusive two outcomes are place value the value of the digit in a
mutually exclusive if they cannot both number based on its position in relation to the
happen at the same time 156 decimal point 32
negative number the numbers less plane shape a (2D) !at shape 161
than zero, written with a minus sign, positive number numbers greater than zero,
such as −3 or −7.5 8 may be written without a plus or a minus sign;
net a !at diagram that can be 6.5 is a positive number and −6.5 is a negative
folded to form the faces of a solid 177 number 8
numerator the number above the primary data data collected by the
line in a fraction 73 individual using the data 64
object a shape before a transformation 161 prime number a number with exactly two
obtuse angle an angle between factors, 1 and itself; 7, 13 and 41 are primes 14
90 and 180 degrees 54 probability a number between 0 and 1
order (of rotational symmetry) used to measure the chance that
the number of times a shape looks the something will happen 153
same in one full turn 91 probability scale a number line to show
origin the point on a coordinate grid probabilities 153
where the value of both variables is zero; it is product the result of multiplying two
usually where the axes cross 129 numbers; the product of 9 and 7 is 63 14
outcome a possible result of an event; proper fraction fraction in which the
throwing a dice is an event, scoring a six is numerator is smaller than the denominator 80
an outcome 154 protractor a device for measuring
output the result a%er a number has been angles 56, 122
acted upon by a function 24 quadrilateral a !at shape with four straight
parallel straight lines where the shortest sides 58
(perpendicular) distance between is always the quantity an amount 115
same; straight railway lines are parallel 60, 87, 121 questionnaire a set of written questions
parallelogram quadrilateral with with a choice of answers 66
two pairs of equal and parallel sides, random describes a situation where outcomes
opposite angles equal, but not 90° 87 can vary and are o%en equally likely 154
per cent out of 100; the symbol for range the di#erence between the largest
this is % 113
and smallest number in a set 105
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