Today’s Lesson: Chapter 2, Lesson 9 - Adding and Subtracting Whole Numbers (Pages 60-63)

Learning Goals:

Addition and subtraction of whole numbers are based on place-value concepts.

Estimation can be used to check the reasonableness of sums and differences.

Addition and subtraction are inverse operations.

Estimation can be used to check the reasonableness of sums and differences.

Additional Resources:

Subtraction Tutorial: http://goo.gl/5iAHr

Addition and Subtraction Review: http://goo.gl/2DW17

Classwork: Practice Questions 1-10 (Work on these in class. Hand in 7, 9, and

Homework Book - pages 26 & 27