Kindergarten Variable Worksheets

This page features free kindergarten variable worksheets focusing on addition and subtraction within 10. Students practice finding the value of unknown variables in simple equations, building foundational algebraic thinking skills. Each worksheet contains 20 problems designed to strengthen number sense and problem-solving abilities.

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Addition & Subtraction

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About these worksheets

Students solve for unknown variables in addition and subtraction equations at four levels of difficulty: within 10, within 20, within 100, and within 1,000. These worksheets build early algebraic thinking by having students find the missing number that makes each equation true. Aligned with kindergarten through third grade standards.

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Add & Subtract within 10

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• Use what you know about number facts within 10 to figure out an unknown quickly.
• Read an equation with a letter and understand that the letter stands for a number.
• Check that your answer makes the equation true by plugging the number back in.