Lesson 2

Reading Graduated Cylinders

Est. Class Sessions: 1

Daily Practice and Problems

Teacher Notes
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Use DPP item D to practice strategies for a subtraction fact in Group C. Have a collection of coins and 200 Charts readily available.

  1. 5 quarters; 10 − 5 = 5
  2. $2.50; Possible response: 8 quarters = $2.00; so 10 quarters = $2.50
  3. $1.25; 25 + 25 + 25 + 25 + 25 = $1.25
  4. $1.25; Possible response: Anne earned half the number of quarters that Kathy did. Half of ten is five, which is $1.25.

D. Earning Money

  1. Kathy earned 10 quarters shoveling snow. Her sister Anne earned 5 quarters. How many more quarters did Kathy earn than Anne? Show or tell how you solved the problem.
  2. How much money did Kathy earn? Show how you know.
  3. How much money did Anne earn? Write a number sentence for Anne's earnings.

    Number sentence _______________________________________________
  4. How much more money did Kathy earn than Anne? Show or tell how you know.