MTH140 Chapter 1 Vocab

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Across
  1. 1. A number that can be expressed as the ratio of two integers (or fraction). This includes repeating and terminating decimals.
  2. 4. A number that can NOT be expressed as a ratio of two integers or as a repeating or terminating decimal - Pi or any square root of an imperfect square are considered irrational
  3. 6. Two numbers that lie the same distance from 0 on the number line but in opposite directions.
  4. 7. A collection of objects or numbers that is often shown using braces
  5. 8. The set of numbers containing zero, the natural numbers, and all the negatives of the natural numbers.
  6. 12. The number which, when multiplied times a particular fraction, gives a result of 1. Fractions are flipped versions of each other.
  7. 13. The way in which numbers are GROUPED does not change their sum or product
  8. 15. The objects of a set.
  9. 16. The repeated factor of a number written in exponential form
  10. 18. The sum of any number and 0 is that number the product of 1 and any number is that number
  11. 19. To continue in the same pattern
  12. 20. Terms that contain the same variables raised to the same power.
  13. 22. To determine or calculate the numerical value of
  14. 23. Formed by numbers and variables connected by the operations of addition, subtraction, multiplication, division, raising to powers, or taking roots
  15. 24. Letters used to represent unknown quantities
  16. 25. The distance a number is from zero on a number line; the positive value of a number.
Down
  1. 2. Division by zero
  2. 3. The sum of a number and its opposite is 0; the product of a number and its reciprocal is 1. The sum/product is equal to the identity element.
  3. 5. The number zero in addition and the number one in multiplication, when combined in an operation doesn't change the answer.
  4. 9. A set containing no elements.
  5. 10. The property that says that two or more numbers can be added or multiplied in any ORDER without changing the result.
  6. 11. a(b + c) = ab + ac
  7. 14. The set of numbers that includes zero and all of the natural numbers.
  8. 17. The set of numbers 1, 2, 3, 4, ... Also called counting numbers.
  9. 21. The opposite of the square of a number. Finding the number, when squared, equals the number under the radical.