Modeling Decimal Addition and Subtraction
Students must understand how to model addition and subtraction with decimals. The following video helps to demonstrate how to use base ten blocks to model decimals.
Week of August 21
This week we began working on multiplying and dividing whole numbers by a power of ten. Our number system is in BASE 10, which means every place value is a multiple of 10. 10 ones make 1 ten, 10 tens makes 1 hundred, 10 hundreds makes 1 one thousand...etc. As students multiply and divide by a power of ten, they begin to understand place value. For background, please watch this Khan Academy video. This video also illustrates powers of ten.
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