Addition within 20 worksheets
Each print is a different sheet with its own answer key. You don't need to sign up.
Make a ten first when you can. It turns hard facts like 9 + 6 into easy ones like 10 + 5.
Two grades, each its own sheet. Print one here, or open a grade for examples and teaching notes.
Print by grade
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1st grade Core grade
Each print is a different sheet with its own answer key. You don't need to sign up.
First graders add within 20 using strategies like counting on, doubles, and making a ten. These sheets stack the facts vertically so your child sees the same layout they'll use for bigger numbers later.
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2nd grade
By 2nd grade the goal is memory, not counting. Students should know every sum of two one-digit numbers by heart. This sheet drills addition facts to 20 in a stacked format; add a timer for a mad-minute grid.
More on facts & fluency
All addition & subtraction worksheets →
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