Solve equations with more than one missing term. Each equation will have the same symbol in place of two or three of the terms. Find the missing number
A. Solve missing addend equations
C. Solve for missing addends in paired equations (Level 1)
D. Solve for missing addends in a set of three equations
E. Solve for missing addends in paired equations (Level 2)
F. Solve missing addend equations containing a 0
G. Solve for missing addends in paired equations containing a 0