Subtraction of Rational Numbers

Series: Elementary Mathematics for Teachers and Students Series

Duration: 22

Year Published: 1970

Creator: Davidson Films

Format: 16mm

Color: Color

Sound: sound

Copyright: Registered 5Aug70 · MP21065 (Jan-Jun 1971) Copyright holder: General Learning Corp Production company: Davidson Films

Description: Illustrates various methods for introducing subtraction of rational numbers. Demonstrates such approaches as renaming numbers and using the number line and the slide rule. Stresses using addition to check answers., Points out that the basic missing-addend meaning of subtraction applies to all rational numbers instead of just whole numbers. Demonstrates several approaches to subtraction, including renaming numbers and using a slide rule. Stresses checking answers by adding.

Complete Record: Illustrates various methods for introducing subtraction of rational numbers. Demonstrates such approaches as renaming numbers and using the number line and the slide rule. Stresses using addition to check answers., , Points out that the basic missing-addend meaning of subtraction applies to all rational numbers instead of just whole numbers. Demonstrates several approaches to subtraction, including renaming numbers and using a slide rule. Stresses checking answers by adding. NOTE: Two (or more) records have been merged together to create this data.