III - Numbers
Standard 3.N.1.2 - Practice estimating subtraction equations by first rounding the numbers then finding the difference.
Included Skills: Estimation
Addition and Subtraction • Adds and subtracts numbers by writing them vertically in the following two cases: - without regrouping. - with regrouping. • Uses the place value in standard algorithm of addition and subtraction. • Solves addition and subtraction problems in different situations presented through pictures and stories. • Frames problems for addition and subtraction facts. • Estimates the sum of, and difference between, two given numbers.