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Lesson 2: Multi-digit multiplication

# Multiplying 2-digit numbers

Learn to multiply two-digit numbers.  In this video, we will multiply 36 times 27. Created by Sal Khan.

## Want to join the conversation?

• Isn't multiplication repeated addition? I don't understand it that well
• Multiplication is also repeated Addition for example:
2 * 6 = 12 or 6 + 6 = 12,
5 * 10 = 50 or 10 + 10 + 10 + 10 + 10 = 50.
(* is multiplication)
• when will i get to not go to school
• maybe on the weekends
• so guys
you always put a zero at the end of every number becuase if you don't put one you'll get it wrong
• so your saying 7x3=180? ye it isn't the answer and doesn't make sense so you don't always put a zero at the end
• is there banging in the back ground or is it just me
• No I hear it to
• i am still working on times, i mean i know some stuff but really in mosty bad.
so just saying this vid really helped.
thanks
• would you like help?
• What would happen if you didn't put the zero in?Would the answer still be the same?
• You mean when you do the adding part?
As long as you keep a space there to account for place value then you don't need the zeros. The zeros are just to make it absolutely clear that your numbers are all in the right right place value.
The rest obviously require zeros to make it the right answer!
• can you use parentheses tog answer a multi digit multiplication question
• what is 100x200
• You could also use powers of ten!