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Counting Up to Solve 75 − 38:
- Solve the following problems mentally. Use either Ana's, Jerome's, Tanya's, or Sara's strategy. Talk with a partner about your solutions. Be ready to discuss your solutions with the class. Use at least two different methods.
- 63 − 29
- 125 − 94
- 286 − 85
- 5008 − 4995
Check-In: Questions 14–17
- Solve using any strategy or method you wish. You can refer to the Subtraction Strategies Menu in your Student Activity Book. Show your strategy and how you checked your answer.
- Choose one problem from Question 14 to solve using a mental math strategy. Explain your thinking.
- Joe had 236 Chocos to sell on Wednesday. At the end of the day he had 144. How many Chocos did Joe sell on Wednesday? Solve using expanded form.
- Solve 238 − 67 using base-ten pieces and a recording sheet.