##### Across

**6.**is a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number.**8.**the number below the line in a common fraction; a divisor.**10.**solving may include mathematical or systematic operations and can be a gauge of an individual's critical thinking skills.**13.**expression is a mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators**14.**the number above the line in a common fraction showing how many of the parts indicated by the denominator are taken, for example, 2 in 2/3.**15.**is a number that is bigger than zero. It can be written with a "+" symbol in front of it, or just as a number.**16.**number is any number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.**18.**says how many times to use that number in a multiplication.**21.**To factor a number means to break it up into numbers that can be multiplied together to get the original number.**22.**two or more non-zero denominators is the smallest whole number that is divisible by each of the denominators.

##### Down

**1.**numbers is a real number that cannot be expressed as a ratio of integers, i.e. as a fraction.**2.**is a squared (multiplied by itself) number subtracted from another squared number**3.**is a quantity that may change within the context of a mathematical problem or experiment.**4.**numbers which follow each other in order, without gaps, from smallest to largest.**5.**is the greatest factor that divides two numbers.**7.**is written with a minus sign in front**9.**a numerical quantity that is not a whole number.**11.**2 numbers is the smallest number that they both divide evenly into.**12.**coefficient is defined as a fixed number that is multiplied to a variable.**17.**test of factoring is used to factor polynomials of the form Ax� + Bx + C. A, B, and C represent constants and x is the variable.**19.**Number can be divided evenly only by 1, or itself. And it must be a whole number greater than 1.**20.**fraction is a fraction where the numerator, denominator, or both contain a fraction.