CROSSWORD STD 5 AND 6

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Across
  1. 2. LARGE DISTANCE ARE MEASURED IN ... YEARS
  2. 7. 7/8 OF (42-(-14)) IS ....
  3. 9. [400/20]-[-30+20]=?
  4. 11. ALGEBRIC EXPRESSIONS WITH THREE TERMS ARE KNOWN AS...
  5. 13. [18+(-18)]/(-20)
  6. 14. (-1)^217 * (+4)^11*(-3)^13
  7. 16. THE TWO SIDES OF A QUADRILATERAL HAVING COMMON END POINTS ARE CALLED AS...
  8. 18. FRACTIONS HAVING DENOMINATORS AS WHOLE NUMBERS OTHER THAN ANY POWER OF 10 ARE CALLED .... FRACTIONS
  9. 19. IF A=2, B=-3 AND C=4 THEN 2A+3B+4C=?
Down
  1. 1. FOR A^N , A IS ITS ....
  2. 3. IF TWO ANGLES ARE COMPLEMENTARY, ONE OF THEM IS 55 THEN THE OTHER IS ...
  3. 4. 4x+2x+3x=180 THEN 4X=?
  4. 5. 127*[25+...]=127*25+127*5
  5. 6. THE MULTIPLICATIVE INVERSE OF A NUMBER IS ITS ....
  6. 8. THE PRODUCT OF ONE NEGATIVE AND ONE POSITIVE INTEGER IS ...
  7. 10. SQUAREROOT OF 49 IS ...
  8. 12. LIKE TERMS WHICH HAVE SAME ..... FACTORS
  9. 15. POWER OF 2 OF A NUMBER IS CALLED AS ITS ....
  10. 17. THE VALUE OF | -7 - 3| IS ...