Long Division Calculator with Steps
Type any division problem and see it worked out the way it’s written on paper: the bracket, each subtraction, the remainder or the decimal, and a check at the end.
Long division goes wrong one small step at a time, and a calculator that only shows the answer can’t tell you which step. This one lays out the whole problem, line by line, so you can put it next to your own work and find the exact place they stop matching.
Try one:
How long division works, and where it usually goes wrong
- The four moves, over and over: divide, multiply, subtract, bring down. Then repeat with the new number until there are no digits left.
- Keep the columns lined up. Each digit of the answer goes directly above the last digit you used. Most wrong answers come from a digit written one column off. Graph paper, or lined paper turned sideways, helps a lot.
- Don’t skip the zero. If the divisor doesn’t fit after you bring a digit down, write 0 in the answer and bring down the next digit. Leaving that 0 out turns 1,003 ÷ 10 into 10 instead of 100.
- The number left after subtracting must be smaller than the divisor. If it isn’t, the digit you chose was too small.
- Dividing by a decimal: move the decimal point to the right in both numbers until the divisor is a whole number. 7.5 ÷ 0.25 is the same problem as 750 ÷ 25.
- Remainder, fraction, or decimal? 17 ÷ 5 is 3 R 2, or 3 2/5, or 3.4. They all mean the same amount. Use the form your teacher asks for.
- Repeating decimals: when a remainder comes up a second time, the digits after it repeat forever. A bar over the repeating digits shows that.
- Check every answer: quotient × divisor + remainder should give back the number you started with.
Everything runs in your browser. Your last problem is saved on this device only.