* Learning Goal
When one column does not have enough ones, regroup using place value. Show your work neatly.
1 Add With Regrouping
Solve each problem and line up the place values carefully.
2 Subtract With Regrouping
Think about borrowing from the tens column when needed.
3 Explain the Move
Use place-value language to explain why regrouping helps.
Prompt: Why do you need to regroup in 70 - 36?
✦ SBA-Style Reflection
Answer using evidence from your work above. On the state test (Smarter Balanced), you will need to explain your thinking clearly.
Constructed Response: Look at your answers above. Choose one and explain how you decided on your answer. Use at least one detail or example.