Grade 1 · Math · Building Confidence
Free Missing Addends Within 20 worksheet - version 7
Find the missing part in addition equations through 20. This printable version includes 12 grade-appropriate questions and a separate answer sheet.
Missing Addends Within 20
Grade 1 · Building confidence · 12 questions · Version PG-H2G68W-RBT8
1.__ + 6 = 19
2.__ + 11 = 20
3.__ + 2 = 20
4.__ + 1 = 20
5.__ + 14 = 17
6.__ + 11 = 12
7.__ + 3 = 6
8.__ + 0 = 2
9.__ + 3 = 20
10.__ + 1 = 13
11.__ + 0 = 20
12.__ + 14 = 20
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 7
- __ + 6 = 1913
- __ + 11 = 209
- __ + 2 = 2018
- __ + 1 = 2019
- __ + 14 = 173
- __ + 11 = 121
- __ + 3 = 63
- __ + 0 = 22
- __ + 3 = 2017
- __ + 1 = 1312
- __ + 0 = 2020
- __ + 14 = 206
Worked example
__ + 6 = 14. Think 14 - 6, so the missing addend is 8.
Common mistake
Adding the known addend and total together.
Helpful hint
Subtract the known part from the total.