What these worksheets practise
Addition worksheets build two skills at once: quick recall of addition facts, and the written method for adding larger numbers column by column. Each worksheet has 20 problems per page, and you choose how many digits each of the two numbers has (1 to 5), so the same generator covers everything from first-grade facts to multi-digit sums.
Single-digit numbers on the worksheets are between 2 and 9. With more digits, problems involve carrying (also called regrouping): when a column adds up to 10 or more, the tens digit moves to the next column. For older students, negative numbers can be switched on for either number.
Worked examples
Two digits plus one digit:
Ones: . Write 5 and carry 1 to the tens. Tens: .
Three digits plus two digits:
Ones: , write 5, carry 1. Tens: , write 2, carry 1. Hundreds: .
Check your answers
Subtract one number from the answer: . Estimating also helps: is about , so 425 is reasonable.
Common mistakes
- Forgetting to carry. written as 45 drops the carried 1.
- Writing the whole column sum. Writing 15 under the ones column turns into 415.
- Misaligned columns. The 8 in belongs under the 7, not under the 4. Line up numbers from the right.
- Adding the carry twice. A carried 1 is added once, to the next column only.
Sample problems
These problems come from the same generator as the worksheet above. Press Generate for a fresh set.
2-digit and 1-digit numbers
3-digit and 1-digit numbers
3-digit and 2-digit numbers
Show answers
- 41
- 63
- 624
- 226
- 247
- 899
Tips for teachers and parents
- Start with one digit plus one digit until facts are quick, then move to two digits plus one digit.
- Grid paper keeps columns lined up for multi-digit problems.
- Timing one page and trying to beat the time a week later is a motivating way to build fluency.