12-hour clock a system of measuring time in terms of a repeating period of 12 hours 24-hour clock

plane shape a (2D) flat shape
positive number numbers greater than zero, may be written without a plus or a minus sign;6.5 is a positive number and -6.5 is a negative number
primary data data collected by the individual using the data
prime number a number with exactly two factors, 1 and itself; 7, 13 and 41 are primes
probability a number between 0 and 1 used to measure the chance that something will happen
probability scale a number line to show probabilities
product the result of multiplying two numbers; the product of 9 and 7 is 63
proper fraction fraction in which the numerator is smaller than the denominator
protractor a device for measuring angles
quadrilateral a flat shape with four straight sides
quantity an amount
questionnaire a set of written questions with a choice of answers
random describes a situation where outcomes can vary and are often equally likely
range the difference between the largest and smallest number in a set
mixed number a number expressed as the sum of a whole number and a proper fraction
modal relating to the mode. For example, the modal age.
modal class the class with the highest frequency
mode the most common number in a set
multiple the result of multiplying a number by a positive integer; the first few multiples of 3 are 3, 6, 9, 12, … , …
mutually exclusive two outcomes are mutually exclusive if they cannot both happen at the same time
negative number the numbers less than zero, written with a minus sign,such as -3 or -7.5
net a flat diagram that can be folded to form the faces of a solid
numerator the number above the line in a fraction
object a shape before a transformation
obtuse angle an angle between 90 and 180 degrees
order (of rotational symmetry) the number of times a shape looks the
same in one full turn