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*Mrs. Wierzba's Class
Sum Sort (11-13)
Grades:
1st Grade,
2nd Grade
Subjects:
Math
Standards:
Flexibly and efficiently add and subtract within 20 using multiple mental strategies which may include counting on; making ten; decomposing a number leading to a ten; using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). (M.2.OA.B.2.)
Student Instructions
1. Drag each equation to the correct box with its matching sum. Be sure to check your work! Each sum will have a different amount of equations in its box.
2. Click the green check-mark when you are finished.
Teacher Notes (not visible to students)
This activity can be a review of these math facts for your students, an assessment if you would like it to be, and will help with their overall fact fluency.
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