**2.**Is the product of any quantity and an integer.**5.**a number shows you how many times the number is to be used in a multiplication.**7.**Something used for making mathematical calculations,**9.**is a number we do not know.**10.**An instrument for measuring angles**12.**The study of the measurement, properties, and relationships of quantities and sets.**14.**Is a flat surface with no thickness**15.**An exact location.**19.**The part of mathematics in which letters and other general symbols are used.**21.**The distance a number is from zero.**22.**A line that just touches a curve at one point, without cutting across it.**24.**A triangle with three equal sides.**26.**is a number which multiplied by itself, gives you the original number.**27.**A point or dot used to separate the whole number.

**1.**A ruler with a sliding central strip, marked with logarithmic scales.**3.**Is the study of 'Rates of Change'.**4.**a position to the left or right of an object.**6.**act of solving**7.**When two or more fractions have the same denominator.**8.**A long thin mark made by a pen.**11.**a figure that has three sides.**13.**A reference line drawn on a graph**15.**to draw out or lengthen.**16.**To draw straight lines or measure distances.**17.**the longest side of a triangle**18.**Sum of numbers.**20.**typically a corner or a point where lines meet.**23.**Are numbers you can multiply together to get another number.**25.**A 3-dimensional object shaped like a ball.