Knowledge Check 8th Grade

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Across
  1. 1. To approximate the value of a number.
  2. 3. A way of expressing a number as a product in the form n x 10, where a is an integer and n is a decimal number such that 1 n 10.
  3. 4. A number that can be written as a product of 10's.
  4. 5. The smallest possible particle of substance
  5. 7. To find the value of an expression.
  6. 9. The amount of matter in an object
  7. 10. In a power, the number that is used as a repeated factor.
  8. 11. The set of whole numbers and their opposites. A number with no fractional part
Down
  1. 1. For any nonzero number a, the reciprocal is 1. The reciprocal of any fraction a is b . Zero does not have a reciprocal.
  2. 2. An expression with a base and an exponent.
  3. 6. A number that has a decimal point followed by digits that show a fractional part.
  4. 7. To find the value of an expression.
  5. 8. How many times to use that number in multiplication.