There are a number of methods for multiplying two numbers together.
One that is very popular (even if it's a bit slower than other methods) is the grid method.
e.g. Calculate 36 x 25.
Step 1: Split the numbers up. -> 36 = 30 + 6 and 25 = 20 + 5
Step 2: Create a grid and put the numbers around the outside.
| 30 | 6 | |
| 20 | ||
| 5 | 
Step 3: For each of the spaces in the grid, multiply the number on the top by the number on the left side.
| 30 | 6 | |
| 20 | 600 | 120 | 
| 5 | 150 | 30 | 
Step 4: Add all these numbers together.
| 600 | 
| + 120 | 
| + 150 | 
| + 30 | 
| 900 | 
Before you start this activity, make sure you have a pen and paper handy so that you can create your own grids as we go.
Let's get started!
 
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