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### Course: Arithmetic>Unit 7

Lesson 2: Multi-digit multiplication: place value and area models

# Using area model and properties to multiply

Sal uses place value, the distributive property, associative property, and an area model to show more ways to multiply.

## Want to join the conversation?

• i still dont get it i mean your doing the easiest problems, but on khan academy they do harder questions way harder.

so do the harder questions. Also im going into 5th grade in two weeks well not counting the summer that wold be longer but I NEED HELPPPP. I dont get it..
• Basically they are multiplying the number on the left top without the zero pretending it’s not there then from the left side multiplying the top left number then add the zeros from the top and if it is a number in 10-100 add those too.
• So it is basically adding zeros?
• Yeah but I recommend Zearn because they have hard problems.
• ok, so for example the equiton is 4,000x7
One way to do this is 4x7=28. Then you add the zeros at the end. so the answer to this equition would be 28,000. I hope it helps!
• Vote if you know what 7000 times 6 is
• Y R we doing it this way we shod do it 1 way and git good at it
• All the mentor wants to tell you is that for example 100 ÷ 10 is basically 10x10÷10. I hope this helps you guys!
• I hope this strategy summarizes some of this video
• I don't get it i understand when we do box method I can't do the other way because it is hard like relly relly relly relly hard
• We do "box methods" to check our answer, solve an equation, or to go along with the standard algorithm.
• bro legit why easy questions on vidio but on khan questions it so hard whyyyyyyyyyyyyyyyyyyy