Short and long multiplication
Home learning focus
Learn how to solve short and long multiplication problems.
To multiply 237 by 4 without using a calculator, you can set it out like this:
1. Start with 4 x 7, which is 28, so write the 8 and carry the 2 to the tens column.
2. 4 x 3 = 12, but remember to add the carried 2 to get 14. Write the 4 and carry the 1 to the hundreds column.
3. 4 x 2 = 8, and we add the carried 1 to get 9.
237 x 4 = 948
This method is called short multiplication.
There's more to learn
Have a look at these other resources around the BBC and the web.