4th Grade Math 2.1, Multiplication Comparisons

We can model multiplication comparisons by using a bar model to represent the two quantities. We can also use a quick drawing of little circles or tally marks to represent the two quantities. A variable is a letter of the alphabet that takes the place of an unknown amount. We can use variables to write an equation. An additive comparison uses addition and a multiplicative comparison uses multiplication. We show several examples of using bar models to help us solve problems. We write an equation for a given comparison statement, and we write a comparison statement for a given equation. We can make our bar models in any order because the Commutative Property states that we can multiply two factors in any order and get the same product.

4th Grade Math Playlist (2015)

I'm using the Houghton Mifflin Go Math!
2015 copyright textbook for this playlist.

You can practice online using the textbook's website

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