Directions: Let us try to answer more challenging activities. Write your answer on a sheet of paper. Find the missing number/s in the given equation. 1.) O - 26 - - O 2-) ( 9 x 10*1 = x x 3.) 45 X 5 = - 3 € 10 - 20) = x 10,- 3x 5-) ( 12 + 19) - - 12+(-18)