3.2b Rewriting Subtraction as Addition

Learning Target:

• I can convert an integer subtraction problem into an integer addition problem in order to solve it.

CCSS:

• 7.NS.1 Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram.

• 7.NS.1.D Apply properties of operations as strategies to add and subtract rational numbers.

• 7. NS.3 Solve real-world and mathematical problems involving the four operations with rational numbers

Classwork:

Online Practice:

• • Adding and Subtracting

  • http://www.softschools.com/quizzes/math/adding_and_subtracting_integers/quiz1034.html

  • http://www.ixl.com/math/grade-7/add-and-subtract-integers

  • http://www.math-play.com/integers-game.html

  • http://www.thegreatmartinicompany.com/negativenumbers/negative-number-addition.html

  • Subtracting

  • http://www.sheppardsoftware.com/mathgames/integers/FS_Integer_subtraction.htm

https://www.math4childrenplus.com/integers-pirate-game/ - copy and paste this one into your browser.

• • • Adding and Subtracting Rational Numbers Online Practice

    • http://www.ixl.com/math/grade-7/add-and-subtract-rational-numbers - you are limited to a certain number of free practice problems per day. When you have reached the limit, move on to another website - DO NOT sign up for anything.

    • http://www.softschools.com/quizzes/math/adding_and_subtracting_rational_numbers/quiz3284.html

Graded Assignment: