AdditionUp to 20
Name: Date:
11 + 1 =
22 + 13 =
39 + 0 =
40 + 3 =
51 + 3 =
61 + 0 =
70 + 17 =
85 + 6 =
919 + 1 =
1014 + 2 =
Addition within 20 worksheets
Addition within 20 is where children move past counting fingers and start using strategies — making ten, using doubles, counting on. These free printable sheets give that strategy work a happy place to happen.
If they get stuck
Addition within 20
The answer key prints on a separate page.
What's on this sheet
First and second graders are expected to add fluently within 20, and the leap from 10 to 20 is bigger than it looks: it is the first time a child meets sums that cross ten. These sheets draw from every valid pair within 20, and multi-page packs run from easier to harder, so page one warms up and the last page stretches.
Why this sheet works
You control whether problems require crossing ten (carrying) or not. Turning carrying off gives a gentle start; turning it on drills exactly the facts children find hardest, like 8 + 7 and 9 + 6. Most workbooks mix these at random — being able to isolate them is what makes practice efficient.
How this one works
One question from a sheet like this one, worked a step at a time — with a sentence saying what just happened and why.
Addition within 20, step by step