The place-value system was made popular in Europe by the famous mathematician Fibonacci.

When adding large numbers together, you learned how to carry digits. Now you will learn to carry digits in long multiplication.

How to Do Long Multiplication when Carrying Digits

Practice long multiplication with carrying on the next page.

Moving a digit to the left, from one place-value column to another.

The result of multiplying numbers together.

Every number in a multiplication problem that is multiplied is called a factor.