Grade 7 Mathematics Module 2, Topic A, Lesson 9

Studying for test


  • 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.  They know that the opposite of a sum is the sum of the opposites; e.g., - ( 3 - 4) = -3 + 4.

Downloadable Resources

Common Core Learning Standards

CCLS State Standard
7.NS.1.d Apply properties of operations as strategies to add and subtract rational numbers.

Curriculum Map