Find the missing addend in equations within 20 and verify each completed equation.
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Free printable missing addend worksheets. Find the missing addend in equations within 20 and verify each completed equation. Generate fresh practice and print the matching answer key.
Grade 1 · unknowns in addition and subtraction · 1.OA.A.1; 1.OA.B.4; 1.OA.D.8. This page opens one focused activity: Find a missing addend. The pictures, numbers, models, and answers come from the same tested worksheet generator as the full activity collection.
Find the missing addend in equations within 20 and verify each completed equation. The task stays consistent across the page, while New problems changes the numbers or pictures for another practice set.
Build the known part and count on to the total, or use the related subtraction fact. Ask the child to describe one answer in words. A short explanation helps show whether the model and the math make sense together.
Preview the Worksheet first, then switch to Answer key to check the exact same set. The question order, pictures, and numbers remain aligned. In the print controls, choose the worksheet, the answer key, or both. Each selected page is designed to fit on one US Letter or A4 sheet and can also be saved as a PDF from the browser print dialog.
This free printable is suitable for short home practice, tutoring, math centers, or an independent classroom station. Begin with one page, use concrete objects or crayons when the direction calls for them, and generate a new set on another day. Accuracy and an explanation matter more than speed for these early math activities.
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Find a missing addend · □ + 4 = 10.
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