In this lesson, students will learn how to assess the reasonableness of subtraction problems by using rounding. By rounding the numbers to the leftmost digit and subtracting, students can determine if the given answer is reasonable or not.
In this lesson, students will learn how to assess the reasonableness of subtraction problems by using rounding. By rounding the numbers to the leftmost digit and subtracting, students can determine if the given answer is reasonable or not.