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

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Learn how to exchange 1 hundred disk for 10 tens disks, and then 1 of those tens disks for t0 ones disks for a two-step regrouping. This skill is used when there aren't enough ones to subtract, and the tens digit is zero

A. Solve 3-digit column subtraction with exchanging with and without using a disk model

B. Solve 3-digit column subtraction with multiple exchanges

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