Two-digit ± one-digit, no regrouping
Two-digit ± one-digit, no regrouping helps children practise adding or subtracting a single digit from a two-digit number without crossing a ten — for example 43 + 5 or 67 − 4. Read the short guide and look through the examples before choosing online practice or a printable worksheet.
How to solve this
- Adding or subtracting a single digit without regrouping only changes the ones digit; the tens stay the same.
- Keep the tens part fixed and calculate only the ones part: 53 + 4 = 5 tens + (3 + 4) ones = 57.
- Check that the tens digit is unchanged and the ones digit is within 0–9.
Examples
46 + 7 = ?
53
82 - 25 = ?
57
34 + 21 = ?
55