Lesson 10: Subtraction
Lesson 10 Learning Objectives:
Subtract without regrouping
Subtract with regrouping using base ten blocks and using the standard algorithm (not including regrouping with 0)
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Reflect:
Reflect in your math journal. Draw, create or write to share your thinking. See Lesson 1 guide for more reflection questions, real life anchoring, playful explorations and creative invitations.
Describe your understanding of regrouping. What is actually happening when you regroup? Use drawings, words, diagrams…Show your thinking in your own way.
How does regrouping help you solve problems accurately?
What does it really mean when we ‘borrow a ten’? A one? A hundred?
Math Talk:
Have a conversation about this image. Be curious. Be creative. Can you see in different ways?
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