Learn all about multiplying two-digit numbers and multiplying three-digit numbers in this free lesson, which includes practice problems.

### Stacked multiplication problems

When you multiply a number or amount, you're **increasing** it many times. In Introduction to Multiplication, you learned that multiplication can be a way to understand things that happen in real life. For instance, imagine that a store sells boxes of pears. The small boxes contain **five** pears each. You buy **two**. You could write the situation like this, and use the **times table** to solve it:

Now, imagine that you decide to buy **two** larger boxes containing **14** pears each. That situation would look like this:

This problem is harder to solve. Counting the pears would take a while. Plus, there's no 14 on the times table. Fortunately, there's a way to write the problem so that you can break it into smaller pieces. It's called **stacking**. It means that we'll write the numbers **on top of one another** instead of side by side.

Let's practice stacking with this problem, 14 x 2.

First, write the numbers, one above the other. It's a good habit to always write the **larger** number on top. The problem will be harder to solve if you don't.

Next, write the **times** sign to the **left** of the numbers.

Instead of an **equals** sign, put a line underneath the number on the bottom.

Notice how the numbers are lined up to the **right**?

When you write a stacked multiplication problem, always make sure the numbers are lined up this way.

For example, let's look at another problem, 5 x 112. See how the 2 is right above the 5?

Also, notice that we put the **larger** number on top, even though it was the second number in our original expression.

Always set up stacked multiplication problems the same way: with the larger number on top...

Always set up stacked multiplication problems the same way: with the larger number on top... and the right digits lined up.