In this video, you will see how to use bar models to show multiplication problems. It also goes over what to do when you see the words "twice" and "three times" in a problem. There is a problem at the end of this video for you to solve. On your paper, please copy down the bar model and solve the problem using a method that is efficient and that you are comfortable with.
Source: Math in Focus
A bookshelf had 4 shelves of books.
Each shelf had 116 books.
The store owner sold 382 books.
How many books are left?
We solved this problem together in class. We needed two separate bar models to show the problem.
Source: Math in Focus
A student explains his group's strategy.
Megan makes a necklace with 12 red beads and 15 yellow beads.
She makes a total of 3 necklaces.
How many beads does she use in all?
This problem uses a Part-Part-Whole bar for addition, then multiplication (we know the number of groups and how many in each group)
Source: Math in Focus
In this video, we take a word problem, model it out with a picture (apples) and then draw the bar model that goes with the problem.
In this video, a student solves a division problem where we know the total and how many groups. He has to figure out how many go into each group.
