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.
Rounding Decimals
Rounding Decimals Rule: 4 or less, let it rest; 5 or more, raise the score. Steps to Rounding: 1. Identify the digit which must be rounded (place value). 2. Look at the number to the RIGHT of the digit. 3. If the digit to the right is 4 or less, the digit remains the SAME. If the digit to the right is 5 or more, the digit goes up by ONE. Examples: 4.57 rounded to the nearest TENTH. 5.19 rounded to the nearest WHOLE.
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