# mathematics

##### Across
1. 6. is a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number.
2. 8. the number below the line in a common fraction; a divisor.
3. 10. solving may include mathematical or systematic operations and can be a gauge of an individual's critical thinking skills.
4. 13. expression is a mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators
5. 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.
6. 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.
7. 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.
8. 18. says how many times to use that number in a multiplication.
9. 21. To factor a number means to break it up into numbers that can be multiplied together to get the original number.
10. 22. two or more non-zero denominators is the smallest whole number that is divisible by each of the denominators.
##### Down
1. 1. numbers is a real number that cannot be expressed as a ratio of integers, i.e. as a fraction.
2. 2. is a squared (multiplied by itself) number subtracted from another squared number
3. 3. is a quantity that may change within the context of a mathematical problem or experiment.
4. 4. numbers which follow each other in order, without gaps, from smallest to largest.
5. 5. is the greatest factor that divides two numbers.