Created by: Sabrina Edmondson
Adapted from BBC online

Multiplying large numbers by splitting
Have a look at the following equation:
255 x 5

Multiplying large numbers by splitting
First split the number into hundreds, tens and ones.
255 splits into 200, 50 and 5

Multiplying large numbers by splitting
Then, multiply each of the numbers by 5.
5 x 200 = 1 000
5 x 50 = 250
5 x 5 = 25

Multiplying large numbers by splitting
This method can be represented in a grid, as shown below.

Multiplying large numbers by splitting
Finally, add the three numbers together to get your answer.
+ +

Multiplying large numbers by splitting
So 255 x 5 = 1,275
Remember : check the answer by doing the opposite!
1,275 ÷ 5 = 255

Multiplying large numbers by splitting
Now have a look at this equation:
255 x 25

Multiplying large numbers by splitting
First split the number into hundreds, tens and ones.
255 splits into 200, 50 and 5 (these go along the top)
25 splits into 20 and 5 (these go along the sides)

Multiplying large numbers by splitting
Then, multiply each number in the column by each number in the row.
Have a look at the grid below.

Multiplying large numbers by splitting
Add up each column, then add the resulting numbers together.
+ +

Multiplying large numbers by splitting
So 255 x 25 = 6,375
Remember : check the answer by doing the opposite!
6,375 ÷ 25 = 255