Grade 1 Addition Worksheets
Grade 1 children move from counting on to knowing their addition facts by heart. These three sheets start with sums to 10, step up to sums to 20, and finish with three-number sums, missing numbers and short word problems. Every sheet has 20 questions and an answer key.
What is on each sheet
- Easy: Adding within 10. A confidence builder that practises the core skill on its own.
- Medium: Adding within 20. One new step, so children stretch without getting stuck.
- Hard: Three numbers, missing numbers and word problems within 20. The last four questions are short word problems that ask children to choose the sum themselves.
Each worksheet prints on one A4 page with space to work, followed by a separate answer key page. Print only the first page for the child and keep the key for checking.
Download the worksheets
Make a new sheet
Finished all three? Make a fresh worksheet with new numbers at the same level, then print it or save it as a PDF.
Worked example
How to use these sheets
- Start with the easy sheet and do not rush: accuracy first, speed comes later.
- Check with the answer key together and ask your child to redo any wrong answers, explaining each step out loud.
- Move up a level after 18 or more correct answers. If a level feels too hard, make a new sheet at the level below.
- Keep sessions short. Ten focused minutes a day builds fluency faster than one long session a week.
Frequently asked questions
What addition should a Grade 1 child know?
By the end of Grade 1 most children can add within 20 and know the bonds to 10 by heart, for example 6 + 4 and 7 + 3.
Should my child use fingers?
Fingers and objects are fine at first. Over time, encourage counting on from the bigger number and making ten, which are faster and more reliable.
Practise on screen too with the Number Bonds Game.