StudyChamp Blog
Column Arithmetic
The written method from school, on screen. Work from the units on the right, write one digit in each box with a finger, and note the carries in the row at the top.
What it trains
- Column addition and subtraction with carrying and borrowing
- Long multiplication with partial products
- Careful, step-by-step working
Questions
Are the carries marked?
No. You can write carries in the top row to help yourself, but only the digits of the answer are checked.
Does it include multiplication?
Yes. From Hard you multiply a three-digit number by one digit; Expert goes up to two-digit multipliers with partial products, as on paper.