1.   Find the missing number. 9 + ___ = 19
    A. 11 B. 9
    C. 10 D. 12
    Hint
  2.   Find the missing number. 14 − ___ = 10
    A. 2 B. 3
    C. 1 D. 4
    Hint
  3.   Miguel wrote 10 thank you cards on Saturday. After writing more on Sunday, he had a total of 22 cards written. How many cards did he write on Sunday?
    A. 12 B. 10
    C. 32 D. 22
    Hint
  4.   Anita planted 24 tree seedlings on Arbor Day. The following day she planted 12 more seedlings. Her sister Maura planted 12 seedlings on Arbor Day. How many more seedlings must Maura plant to have planted the same number as Anita?
    A. 22 B. 12
    C. 36 D. 24
    Hint
  5.   Write an equation to describe the pattern. Then use the equation to find the next three numbers in the pattern.

Input (s)202326293235
Output (w)151821   
    A. s − 5 = w; 25, 28, 31 B. s − 4 = w; 24, 27, 29
    C. s − 5 = w; 24, 27, 30 D. s − w = 5; 24, 27, 30
    Hint