Place value determines where the value of a digit goes. In the presentation I explained what place values are and how the place value house works and showed two examples. The examples were one place value house (Hundreds, Tens & Ones), and the second example was two place value houses (Hundreds of Thousands, Tens of Thousands & Thousands).
When you are adding the numbers move to the left however, if you subtract the numbers move to the right. Place value houses go to decimals as well.
LI: To understand the movements within the place value system.
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