Houses of Addition

Unit 11: The Numbers Are Getting Bigger
Lesson 2 of 15

Objective: SWBAT use a tens/ones mat to solve double-digit addition problems based on place value strategies.

Big Idea: Using the analogy of an apartment house made up of the tens and ones apartments, upstairs, middle and downstairs, students build and solve 2-digit addition problems.

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Math, Place Value, Number Sense and Operations, addition algorithm, base ten
  45 minutes
screen shot 2014 01 26 at 7 55 04 pm
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