Math

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Across
  1. 4. Ones digit can writen as _______.
  2. 7. Formula for find the sum of first n positive ______ natural numbers is 2+4+6+…+2n = n . (n+1)
  3. 8. If the numerator is bigger than the denominator, this fraction is _______.
  4. 9. Improper fractions can writen as _____________.
  5. 11. The cluster represented by the letter Z.
  6. 12. (Last term + First term) / 2 . Number of terms is equal to it.
Down
  1. 1. The numbers which are only divided by itself and 1.
  2. 2. (Last term – First term) / Common difference + 1 equals to it.
  3. 3. Symbols for write numbers.
  4. 5. Divisor multiplied by quotient plus remainder equals to it.
  5. 6. For any none-zero numbers a in the expression a to the power of n is called an exponential expression where n is the ________.
  6. 10. For any none-zero numbers a in the expression a to the power of n is called an exponential expression where a is the ______.