Students practice using the standard algorithm of column addition for both 2 and 3 digit addends with and without regrouping into the hundreds
A. Exchange 1s for 10s and 10s for hundreds on a place value chart. Write the corresponding number
B. Solve addition problems involving exchanging 1s and 10s using a place value chart for support
C. Practice column addition with exchanging alongside a place value chart
D. Use the standard algorithm of 2-digit column addition with regrouping into the hundreds (Part 1)
E. Use the standard algorithm of 2-digit column addition with regrouping into the hundreds (Part 2)