Monday, January 5, 2015

Multiplication

Here's a good video for the standard algorithm in multiplication.

We are doing multiplication!!! Not just any ol' multiplication but four digit by one digit multiplication.
I start off by teaching them the partial products method.
Here it is below:



This is called PARTIAL PRODUCTS.
I go through each place value and multiply. Then I add up all the products to come up with the final answer.

Akire showing off another example! 

Dylan here did it by himself. 

Dylan didn't have to show me all of the number sentences. I can see he got 360 by multiplying 60 x 6.

Here are some of the questions the district wants our kiddos to answer:

How does your knowledge of place value help you determine the product of 17 x 10? 17 x 100? How are those products similar? How are they different?

How does the value of the product change when you're multiplying by 100 rather than by 10?

Use three different methods to multiply 3,184 x 7.

Given mental math, partial products, and the algorithm, which strategy might you choose when multiplying 2,506 x 4? Explain your answer.

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