1.   Solve the equation.

___ + 2 = 5
    A. 5 B. 2
    C. 3 D. 7
    Hint
  2.   Solve the equation.

___ − 12 = 12
    A. 24 B. 12
    C. 18 D. 0
    Hint
  3.   Solve the equation.

___ + 8 = 19

    A. 11 B. 12
    C. 9 D. 27
    Hint
  4.   Solve the equation.

12 + ___ = 23
    A. 11 B. 10
    C. 35 D. 9
    Hint
  5.   Juan scored 7 points in the first half of a football game. At the end of the game, he had scored a total of 21 points. Write an equation to find how many points he scored in the second half.
    A. 7 + ■ = 21 B. 7 − ■ = 21
    C. ■ = 21 + 7 D. ■ − 21 = 7
    Hint