![How to do quick multiplication without a calculator? The method of lines | Engineersdaily | Free Engineering Database How to do quick multiplication without a calculator? The method of lines | Engineersdaily | Free Engineering Database](https://3.bp.blogspot.com/-T1V_N62xHI0/V2bUxPm0qSI/AAAAAAAAGvk/G_Oq0ylFDBUajI_7haktp1EKk_tZa9LAgCLcB/s1600/multiply%2528engineersdaily.com%2529.png)
How to do quick multiplication without a calculator? The method of lines | Engineersdaily | Free Engineering Database
![SOLVED:You can use binomial multiplication to multiply numbers without a calculator. Say you need to multiply 13 times 15. Think of 13 as 10 + 3 and 15 as 10 + 5. ( SOLVED:You can use binomial multiplication to multiply numbers without a calculator. Say you need to multiply 13 times 15. Think of 13 as 10 + 3 and 15 as 10 + 5. (](https://cdn.numerade.com/previews/211c2c2e-edc3-49bc-9169-d905eaf355fa.gif)
SOLVED:You can use binomial multiplication to multiply numbers without a calculator. Say you need to multiply 13 times 15. Think of 13 as 10 + 3 and 15 as 10 + 5. (
![GCSE Maths - Grid Method for Multiplication - Non Calculator - Mental Arithmetic - Linear Foundation - YouTube GCSE Maths - Grid Method for Multiplication - Non Calculator - Mental Arithmetic - Linear Foundation - YouTube](https://i.ytimg.com/vi/E74-1x_yd4M/hqdefault.jpg)