Teachers, save “Addition / Subtraction Estimation” to assign it to your class.

1. Think about the SUM or DIFFERENCE of each expression. WITHOUT solving, please determine if the answer is: - less than 10 - between 10 and 50 - between 50 and 100 - larger than 100 2. Drag the expression into the correct column. 3. On the following pages, choose TWO addition problems and TWO subtraction problems. Make sure to show all of your work. 4.