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

scalene triangle triangle in which all sides are different in length and all angle are different
secondary data data not collected by the individual currently using the data
sector part of a circle, cut from the circumference to the centre
sequence a set of numbers arranged in order, according to a rule
set square typically plastic, a triangular shape, with angles 90°,60° and 30° or 90°,
45° and 45°
share to split up into parts
short division similar in method to long division but where remainders are simply
placed in front of the following digit
side the one-dimensional lines bounding an object
sieve of Eratosthenes a method of finding prime numbers
simplest form dividing all parts of a fraction or ratio by their highest common factor simplify (fraction) find an equivalent fraction with smaller numbers
simplify (an expression or equation) gathering, by addition and subtraction, all like terms to give a single term
simplify (ratio) dividing all parts of the ratio by a common factor
solid shape shape having three dimensions
solution the value of any unknown letter(s) in an equation
solve calculating the value of any unknown letter(s) in an equation
sphere a solid with all points on its surface the same distance from its centre
square quadrilateral with all sides equal, all angles 90°
square centimetre (cm2) unit of area; area of a square of side 1 centimetre
square kilometre (km2) unit of area; area of a square of side 1 kilometre
square metre (m2) unit of area; area of a square of side 1 metre
square millimetre (mm2) unit of area; area of a square of side 1 millimetre
square number the result of multiplying a whole number by itself; 81 is a square number
equal to 9 × 9
square root the square root of a number, multiplied by itself, gives that number; the square root of 36 is 6