Japanese Multiplication Hundreds

First pick a multiplication problem.

Japanese multiplication hundreds. The japanese multiplication trick as it is called has been circulating social media sites again and with it have been a lot of questions about why it works and if it is worth teaching to students. Using words like hundreds tens and unit will help you to explain this. Here s how the trick works. In the japanese multiplication method a student is able to complete a multiplication problem of two large numbers by merely drawing a few lines and counting the points of intersections.

Some of the worksheets for this concept are grade 6 math circles november 56 2013 multiplication multiplication methods characteristics of japanese mathematics lessons the soroban abacus handbook 3x2 lattice multiplication b multiplication and division of fractions 2 mental maths strategies for multiplication and division. Each cluster of intersections corresponds to one of the four smaller products that go into multiplying two numbers for instance the left cluster 3 1 is what gets you the 300 or 3 hundreds. If you take the time to play around with multiplication problems this way it s easy to see that it is really another way to transition from the the. Youtuber mindyourdecisions has an excellent explanatory video so to follow along with their example we ll go with 12 x 13.

How does this work. The table would then be filled in by 4 square blocks hundreds a group of 6 rod blocks and another group of 2 rod blocks for a total of 8 rod blocks. The japanese multiplication method is really just a visual way of representing those four steps.