Math
Unit 3 - Addition and Subtraction
Addition and Subtraction Strategies - Here is a list of the strategies we learned throughout the unit.
We also learned to round numbers to the nearest ten or hundred before adding them. We use "rounding mountains" to help us determine the closest ten or hundred.
We are learning the "Adding Up" Strategy using the number line and equations to show our thinking.
A second addition strategy we learned is "Keeping one number whole". Check out how we use a number line and equations to show our thinking.
Another addition strategy we use is "Compensation" . Look at how we borrow from one number to make an easier problem!