Unit 2, Lesson 8, Grade 7 icon
Unit 2, Lesson 8

Applying Properties of Operations to Add and Subtract Rational Numbers

EngageNY 45 min(s)

Students use properties of operations to add and subtract rational numbers without the use of a calculator. Students recognize that any problem involving addition and subtraction of rational numbers can be written as a problem using addition and subtraction of positive numbers only. Students use the commutative and associative properties of addition to rewrite numerical expressions in different forms. This lesson is the first of a two-day lesson using the properties of operations to add and subtract rational numbers.

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