4 Operations Math Worksheet – 36 Mixed Problems

Solve a missing-number equation for any of the four operations, such as 9 ÷ ___ = 3.

Apply the inverse operation to find an unknown addend, subtrahend, factor or divisor when the direct operation is not obvious, such as rewriting 6 + ___ = 7 as 7 − 6.

Recall multiplication and division facts within 100, such as 7 × 10 = 70 and 100 ÷ 10 = 10.

Introduce or review the inverse-operation strategy before assigning the page, since the instructions expect students to already reverse an operation when a direct solve is not obvious.

Review multiplication and division fact families beforehand, since several problems require recalling facts such as 7 × 10 or 25 ÷ 5 rather than counting them out.

Use the running TOTAL line at the bottom as a quick self-scoring check once students finish. Use an inverse multiplication and division worksheet to focus on the fact families behind missing-number questions. Revisit the multiplication facts with these one-digit multiplication worksheets.

Missing-addend and missing-subtrahend solving — students find the unknown value in equations like 6 + ___ = 7 and 20 - ___ = 15.

Missing-factor and missing-divisor solving — students find the unknown value in equations like 4 × ___ = 20 and 70 ÷ ___ = 10.

Inverse-operation reasoning — problems explicitly prompt students to reverse the operation, turning an addition equation like 6 + ___ = 7 into a subtraction check, 7 - 6.