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# Relate multiplication with area models to the standard algorithm

Learn the concept of multi-digit multiplication. Watch and learn how to break down the process into understandable steps, using two different methods.

## Want to join the conversation?

• Any grade can do this, it just depends if you are ready for the challenge. If you think that you are, I would definitely give it a try!
• Get this to 10 likes please and I will show a little hack I guess you could say but it is actually just one problem I found and it gives like 1750 energy points and I think you can just keep answering it. :)
• Your comment is very confusing.
• I'm a 5th grader and I can do this in my head is that good?
• I think so that means your getting better at mental math
• This is kinda weird way to do it because I was taught a different way._.
• You can do this any way if you get the same answer!
• Confusing to me can someone please explain.
• In the first part of the video (up until ) Sal uses the idea of "area" to make the multiplication more clear:

Imagine you're looking at a field from above,
Here, it's a rectangle that have a width of 352 meters and a length of 481 meters.

- He divides these quantities into blocks, using round numbers for the sides, as much as possible:
352 is divided into widths of 300, 50 and 2 meters.
481 is divided into lengths of 400, 80 and 1 meters.

So, looking from above, the field is now divided into 9 rectangles.
Sal didn't respect proportions when drawing them, one of them is really big, others have various sizes:
300 x 400 meters
300 x 80 meters
300 x 1 meters
50 x 400 meters
50 x 80 meters
50 x 1 meters
2 x 400 meters
2 x 80 meters
2 x 1 meters

- These multiplications are easier to handle, so he does the multiplications and write inside each rectangle their area.

- to find the final answer he adds all the area together.

Does that help?
Let me know if you need more explanations. :-)
• (1 vote)
• Hmm I don't fully get it but doing well.
• Keep practicing and you will get it!
• is this 5th or 6th grade math?
• I think Khan Academy has it in 5th grade math, but different curriculum sources may teach it in different grades.
• I can't really understand how you have to multiply the numbers if it's together. I have difficulty doing it. Do you have any tips to do things easier?Thx!
• You can try filling it out to make it easier or write it down and study it. Give it a try. [If you don't try you don't win]As if a Inspire you to try. plssssss you can do it(^ ^)
• are all the question going to be harder
• it will get progressively harder as you go but to help you should do it in your journal.