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engaging printable & digital math lessons for upper elementary teachers

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Practice finding missing numbers in equations using task cards for 1st grade math centers. Covers standard 1.OA.8.
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Photo Box Labels
1. Clip Cards
2. Matching Cards
3. Math Sort
Answer Key & Recording Sheet
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Missing Numbers in Equations – 1st Grade Task Cards

Students practice determining the unknown number in equations using a set of engaging task card activities.
• Build understanding of addition and subtraction relationships
• Solve problems with missing numbers using three whole numbers
• Use during independent centers, small groups, or partner work

Learning Goal: I can determine the unknown whole number in an addition or subtraction equation relating three whole numbers. (1.OA.8)

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Grade Level: 1st Grade
Math Skills: Addition & Subtraction, Expressions & Equations
Resource Series: Math Task Card Centers

Part of our best-selling math centers collection, this task card set makes review, small groups, and test prep simple and effective. The consistent format builds independence and helps you keep math stations organized.

Each set includes:

  1. Clip Cards (18 cards) – Students solve problems and choose the correct answer.

  2. Matching Cards (18 sets) – Students match related cards to practice key skills and vocabulary.

  3. Math Sort (18 cards with category headers) – Students sort cards into categories to deepen their understanding of the concept.

This resource comes in both printable and digital formats and fits perfectly in standard photo boxes. Labels are included for easy storage all year long.

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