Education Technology

Middle Grades Math: Addition and Subtraction of Rational Numbers: Part 2
by Texas Instruments

Published on November 29, 2011

Objectives

  • Students will represent signed mixed numbers and the results of the addition and subtraction of signed mixed numbers on a number line.
  • Students will understand subtraction of mixed numbers as adding the additive inverse.

Vocabulary

  • rational number
  • equivalent fractions
  • mixed numbers

About the Lesson

This lesson involves representing addition and subtraction of signed mixed numbers on a number line for a randomly generated target sum or difference.
As a result, students will:

  • Represent addition and subtraction of signed mixed numbers on a number line.
  • Calculate sums and differences, and use the TI-Nspire to check the accuracy of their calculations.