7. Add the decimals: 23.85 , 8.94 0.087 and 314.6
8. Find the complement of
of right angle
9.
Name the following:
(1) An angle whose measure is more than 180° but less than 360°.
(ii) A line intrsecting two or more given lines in a plane at distinct points
10. Simplify (-45) + (-12-31
11. What will be the sum of an integer and its additive inverse
12. Convert into fraction and in simplest form
0.124
13. One -fourth of a number plus 3 gives 4. Find the number
14. Find the value of n if [225] = 2n +7
15. Find the perimeter of a regular octagon whose side is "a" units