You are using an outdated browser and it's not supported. Please upgrade your browser to improve your experience.

lesson 16
1 hour

Ones plus Ones or Tens plus Tens


Description

Objective: Add ones and ones or tens and tens. (Day 1)

During Lesson 16, students recognize single-digit addition facts as they solve 15 + 2, 25 + 2, and 35 + 2. When adding 33 + 4, students see that they are adding 4 ones to 3 ones, while the tens remain unchanged, to make 3 tens 7 ones or 37. When adding 12 + 20, students see that they are adding 2 tens to 1 ten to make 3 tens 2 ones or 32. In both cases, one unit remains unchanged. Students work at a more abstract level by using dimes and pennies to model each addend. For instance, students model 14 cents using 1 dime and 4 pennies, and add 2 additional dimes or 2 additional pennies.

Downloads

There may be cases when our downloadable resources contain hyperlinks to other websites. These hyperlinks lead to websites published or operated by third parties. UnboundEd and EngageNY are not responsible for the content, availability, or privacy policies of these websites.

Tags

Credits

From EngageNY.org of the New York State Education Department. Grade 1 Mathematics Module 4, Topic D, Lesson 16. Available from engageny.org/resource/grade-1-mathematics-module-4-topic-d-lesson-16; accessed 2015-05-29.
Copyright © 2015 Great Minds. UnboundEd is not affiliated with the copyright holder of this work.
Download