Column sums on screen, one digit at a time
For parents and teachers of children in Years 2 to 6. The sum is laid out on squares as in an exercise book; your child types each digit in the order it is worked out, and every digit is checked straight away. Free, no sign-up.
How to use it with your child
- Choose the kind of sum and how many digits. The settings and the sheet number are the same as the worksheet maker's.
- Tap Start on this device. The yellow square is the next one to fill: answers start from the ones column, on the right.
- Each digit is marked as it is typed. A wrong digit fades and can be tried again; the sum counts as right first time only if every digit was.
- In long division the order is: the quotient digit, then the product under it, then what is left with the next digit brought down. Print on paper opens the same sums in the worksheet maker.
Which school years it suits
Years 2–3 (P2–P3, 小2–小3, 초2–초3) for column addition and subtraction, Years 3–4 for multiplication, Years 4–5 for long division.
Why one digit at a time
When a whole answer is wrong, it is hard to tell where it went wrong. Checking each digit as it is written shows the exact column: a forgotten carry, a borrow that wasn't taken, or a slip in the times table inside a long division. The small carry and borrow marks show up when their column comes, as a teacher would write them.
Ready-made links
- 2-digit + 2-digit with carrying
- 3-digit − 3-digit with borrowing
- 2-digit × 1-digit
- 2-digit × 2-digit, 3 sums
- Long division with remainders
Questions parents ask
Does my child have to type the carries?
No. The small carry and borrow figures appear by themselves when their column comes up, so your child can see them; only the answer squares are typed.
What happens when a quotient digit is 0?
When a quotient digit is 0, there is nothing to take away, so the next digit is simply brought down. Your child types the 0 in the quotient and carries on.