MATH IS HARD

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Across
  1. 3. a positive whole number (1, 2, 3, etc.), sometimes with zero.
  2. 5. a numerical quantity that is not a whole number.
  3. 6. a number greater than 1 that is not a product of two smaller natural numbers.
  4. 8. relates to or denotes a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.
  5. 11. a process of writing all numbers as a product of primes.
  6. 12. a distance above sea level. they are usually measured in meters or feet. They can be shown on maps by contour lines, or by numbers giving the exact ______ of particular points on the Earth's surface.
  7. 13. | x | of a real number x is the non-negative value of x without regard to its sign.
Down
  1. 1. A number without fractions; an integer
  2. 2. a number that is not a fraction; it is a whole number.
  3. 4. a positive integer that can be formed by multiplying two smaller positive integers.
  4. 7. any number that can be written as a fraction, where both the numerator and the denominator are integers and the denominator is not equal to zero
  5. 9. two numbers that are the same distance from 0 but on opposite sides of 0
  6. 10. a number or quantity that when multiplied with another produces a given number or expression.