Little Learners · Ages 5 to 7
Addition Fill-In to 20
Fill-in-the-blank addition practice with sums up to 20. Five levels with answer keys.
The learning journey
Every activity is one step. Here is where this one fits.
- PlayLearn the idea in a game
- Practise(you are here)Lock it in on paper
- ReviewCome back and keep it sharp
- MasterTake on a harder challenge
- AchieveEarn a certificate
About Addition Fill-In to 20
A clean, classroom-ready addition worksheet for early primary children. Each level produces a fresh A4 page of fill-in-the-blank sums whose missing values rotate between the addends and the result, encouraging children to think about both directions of addition rather than memorising a single fact. Sums grow from within 10 at the Easy level to within 20 at the Challenge level, with 12 questions per page laid out in two columns for comfortable handwriting. Every level downloads with its own answer key on a separate page, clearly marked "Do Not Distribute" so it does not get mixed into the homework folder. The worksheets print cleanly in black and white on any home or school printer, and every download produces a freshly generated set of questions so children can practise the same skill multiple times without seeing the same numbers. Use the worksheets for daily warm-ups, homework folders, or summer review. The matching online game is Addition Lightning, which builds the same skills with quick-fire mental math.
Common questions
- How many questions per page?
- Twelve questions per page, in two columns, with space to write.
- Are the questions the same every download?
- No. The questions are generated fresh on every download, so each PDF is a unique practice sheet.
- Is the answer key included?
- Yes. Every level downloads with its own clearly labelled answer key PDF.
- Will it print in black and white?
- Yes. The worksheets are designed for clean black-and-white printing on any home or school printer.
A hand for grown-ups
- Before you start
- Have something countable nearby. Being able to check "3 and 2 really is 5" by counting builds trust in the maths.
- While they work
- If a sum is hard, suggest counting on from the bigger number rather than counting both from one. It is a real strategy, not a crutch.
- Afterwards
- Try one together out loud, talking through how you worked it out. Hearing an adult think aloud is genuinely useful.
- Watch out for
- Counting both numbers from one every time. Nudge gently towards "start at the bigger one and count on".
- Away from the screen
- Add up small shopping items, or dots on two dice. Board games with dice are addition practice in disguise.
Where to go next
Chosen by the skills this activity practises.