Lesson 2

Measure with Standard Units: Short Lengths

Est. Class Sessions: 1–2

Daily Practice and Problems

Teacher Notes
X

Encourage students to use a number line or 200 Chart.

  1. 35 birds; 18 + 5 + 12 = 35 birds.
  2. 25 birds; 35 − 10 = 25 birds.

F. Animals

Show or tell how to solve each problem. Write a number sentence. Use a number line or 200 Chart.

  1. Mark saw eighteen geese in the pond at the park. He also saw five ducks and twelve crows at the park. How many birds did Mark see in all?


    Number sentence ____________________________________
  2. If ten of the geese fly away, how many birds would be in the park?


    Number sentence ____________________________________