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- Study the number line and number sentences below. Do you agree that they show how the hopper moved? Why or why not?
- 10 + 10 + 10 + 10 − 1 − 1 = 38
- 40 − 2 = 38
- Write number sentences to show how each base-ten hopper moved on the number lines below. Compare your sentences with a partner. Answer these questions:
- Do you agree that both number sentences are correct? It not, correct them.
- How do your sentences match the moves on the number line?
