Lesson 6

Paper-and-Pencil Subtraction:
Compact Method

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

Have 200 Charts and desk number lines readily available.

  1. 18
  2. 17
  3. 16
  4. Possible response: Jean has 71 marbles. After her sister gave her some more she had 88 marbles. How many marbles did her sister give her?

T. Word Problems

  1. 45 − 27 =
  2. 71 + = 88
  3. 23 − = 7
  4. Tell your neighbor a word problem for Question B.