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Missing Addend – Sums of 18 – Seashell

Finding each missing addend in these 15 problems can be as fun as searching for seashells on the seashore – only you won’t get all sandy!

CCSS  1.OA.6

Please go to this page to see all the missing addend worksheets for sums of 16-20.

missing addend - sums of 18 - seashell

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Grade Levels: First Grade
Subjects: Addition // Math // First Grade Addition // Missing Addend Worksheets - Sums of 16-20
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