01 / Digits
One to five
Choose the size of each number on its own, so 3 digits plus 1 digit is possible.
Free tool
Choose how many digits each number has and whether carrying is needed, and print a fresh addition sheet in rows or stacked columns. Make the answer the missing part, or the first or second number, for harder practice. No problem repeats, there is an answer key, and every sheet has a code so you can print the same one again.
Every answer is worked out by the program.
The same code and settings always give the same sheet. Copy link keeps both.
Sheets are made in your browser from the code and settings. Nothing is uploaded.
How it works
01 / Digits
Choose the size of each number on its own, so 3 digits plus 1 digit is possible.
02 / Carrying
Practise the idea on its own: a sheet with no carrying, then one where every sum needs it.
03 / Missing
12 + ? = 19 asks for the second number, which is a first step towards subtraction.
Guide
An addition worksheet is a page of sums to work through. A good one matches the learner: simple facts first, then two digit numbers without carrying, then carrying, then bigger numbers. This page gives you that control. You choose the digits for each number and whether a sum may need carrying, then print a sheet that is new every time and still comes back unchanged from its code.
| Step | Digits | Carrying | Example |
|---|---|---|---|
| Facts | 1 and 1 | Any | 8 + 7 = 15 |
| Tens, no carrying | 2 and 2 | Never | 23 + 41 = 64 |
| Tens, carrying | 2 and 2 | Always | 47 + 38 = 85 |
| Hundreds | 3 and 3 | Any | 256 + 378 = 634 |
Each example is one the settings can make. In 47 + 38, the ones column is 7 + 8 = 15, so write 5 and carry 1. Then the tens column is 4 + 3 + 1 = 8, which gives 85. In 23 + 41, the ones are 3 + 1 = 4 and the tens are 2 + 4 = 6, with no carrying at all.
With The second number, a problem reads 12 + ____ = 19, and the answer is 7. With The first number, it reads ____ + 7 = 19, and the answer is 12. These ask the learner to think of addition as a balance, and they lead naturally into subtraction. Choose A mix of all three to put every kind on one sheet. Missing number problems are written across the page even if you chose the stacked layout, and the page says so.
A sum and its swap, such as 3 + 5 and 5 + 3, count as one problem, so only one of them is printed. That matters for small settings: adding two numbers from 0 to 9 allows only 55 different sums. If you ask for more than that, the sheet has 55 and a note says why. For longer practice, raise the digits or make several sheets.
Across, with a line for the answer, suits facts and quick practice. Stacked columns suit sums done on paper, where the learner writes the carried digit above the next column. The numbers are set in a monospaced font so that the ones, tens and hundreds line up under each other.
Mix in the other operations with the math worksheet generator, or practise counting patterns with the skip counting worksheets. Check your own sums with the fraction calculator when fractions come next.
Questions
Yes. Set Carrying to Never needs carrying. Every sum is checked against it.
Yes. Choose Always needs carrying. The first and second number need enough digits for a carry to be possible, and one digit and one digit works for sums like 8 + 7.
Choose a Missing part. The second number gives 12 + ____ = 19, and the first number gives ____ + 7 = 19. They are written across the page.
Yes, on the last page, numbered like the sums. Answer key only saves it on its own.
The settings only allow that many different sums. Adding two one digit numbers gives 55. Raise the digits to get more.
Yes. Copy link saves the sheet code with your settings.
Yes. Choose US Letter under Paper.