Tuesday, April 30, 2024
Thursday, April 25, 2024
Multiplying Decimals
7:37 AM 0 Comments
Remember, when you multiply, you are really just adding equal groups!
When you multiply whole numbers by whole numbers (4 x 3) you are making an array of equal groups, to form a rectangle.
When you multiply a whole number by a decimal, you are also making equal groups!
You can use the same strategy when multiplying decimals by decimals.
Arrange your base ten blocks to show the 2 factors (length x width).
Fill in any blank spots to complete the array (rectangle).
What's the area of the complete model?
(click on the image it get a closer look)
Here is a helpful video that shows how to solve decimal multiplication
problems using area models...
Finally, as we learned in class this week, we can also use the algorithm to find the product!
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