Curriculum>Grade 2> Module 5>Topic C: 3-Digit Column Subtraction

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Subtract three-digit numbers that require one regrouping using the standard algorithm. The first problems include a disk model to illustrate the subtraction and the regrouping. The remaining problems do not use a disk model

B. Solve 3-digit column subtraction with multiple exchanges

C. Model 2-step exchanges in subtraction problems using a disk model

D. Solve 3-digit column subtraction with 2-step exchanges with and without using a disk model

E. Solve 3-digit column subtraction with 2-step exchanges