Addition & Subtraction Drill (50 Facts)

2.OA.2 — Fluently add and subtract within 20 using mental strategies; know all sums of two one-digit numbers from memory

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What is on the three Addition & Subtraction Drill (50 Facts) worksheets

Support: draws ten frames beside every problem.
On level: The grade's own level, with no drawings.
Challenge: uses the harder cases.

Example problems from the on-level sheet

6 + 2 = ___
7 - 1 = ___
12 - 6 = ___

Every sheet is generated, so the numbers are different each time you make one.

Before this: 1.OA.6 — add and subtract within 20; fluently add and subtract within 10. strategies include making ten, decomposing to a ten, and using known equivalents.