Endless Math Sheets

Addition and Subtraction Within 20 Worksheets

Addition and subtraction facts within 20 on the same page. It is good practice for the fact fluency second graders are expected to reach.

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Sheet code NT3CDK
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Add and Subtract Within 20

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Look at each sign, then solve.

1.5+5=
2.13+5=
3.15−11=
4.14−4=
5.8−7=
6.0+6=
7.12+4=
8.6−3=
9.4+8=
10.12+0=
11.3+16=
12.3+2=
13.3−2=
14.9−4=
15.3+0=
16.13+0=
17.17+1=
18.4−0=
19.9−1=
20.8−6=
21.7+10=
22.5+15=
23.20−17=
24.10−2=
25.9−0=
26.0+3=
27.5−3=
28.10−5=
29.19−4=
30.2+11=
endlessmathsheets.comSheet NT3CDK

Answer keyAdd and Subtract Within 20

Look at each sign, then solve.

1.5+5=10
2.13+5=18
3.15−11=4
4.14−4=10
5.8−7=1
6.0+6=6
7.12+4=16
8.6−3=3
9.4+8=12
10.12+0=12
11.3+16=19
12.3+2=5
13.3−2=1
14.9−4=5
15.3+0=3
16.13+0=13
17.17+1=18
18.4−0=4
19.9−1=8
20.8−6=2
21.7+10=17
22.5+15=20
23.20−17=3
24.10−2=8
25.9−0=9
26.0+3=3
27.5−3=2
28.10−5=5
29.19−4=15
30.2+11=13
endlessmathsheets.comSheet NT3CDK

What's on this worksheet

Half addition and half subtraction with numbers up to 20. Each sheet comes with an answer key on a separate page.

Teaching tips

  • Point out pairs that belong to the same fact family when they appear on the sheet.
  • For a quick check, ask students to explain one addition and one subtraction strategy they used.

How to use this worksheet maker

Press New worksheet for a fresh set of problems, then Print. To save a PDF instead, choose "Save as PDF" in the print window. Every sheet has a short code in the bottom corner. Copy the link to a sheet and you can print exactly the same problems again later, which is handy for retakes and for sharing with other teachers.

Common Core alignment: 2.OA.B.2 (Grades 1–2).

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