YourTeacher.com - Your Personal Math Teacher Inside Every Lesson

Demo Lesson!

Barstow Community College

Pre-Algebra: Lesson 047

Multiplication and Division
Multiplying Mixed Numbers

Lesson Description

Students learn to multiply mixed numbers by first rewriting the mixed numbers as improper fractions, then multiplying the improper fractions together, then rewriting the resulting improper fraction as a mixed number, if necessary. For example, to multiply 1 8/15 x 1 1/4, first rewrite the mixed numbers as improper fractions, to get 23/15 x 5/4. Next, cross-cancel the 15 and 5 to 3 and 1, and we have 23/3 x 1/4. Next, multiply across the numerators and denominators to get 23/12. Finally, rewrite 23/12 as the mixed number 1 11/12.

Thousands of Online Math Lessons

Middle School
High School Math

Pre-Algebra
Algebra 1
Geometry
Algebra 2

Community College
College Math

College Pre-Algebra
Introductory Algebra
Intermediate Algebra
College Algebra

Find the Lesson You Need

Textbook Search

Our lessons matched
to your textbook

Keyword Search

Search our lessons
by keyword:

Standardized
Test Prep

SAT
ACT
GED
ACCUPLACER
COMPASS
CLEP
GRE
GMAT
ASVAB
PRAXIS
TEAS

more tests...

Placement Test Prep

I have two boys in high school and yourteachermath has been unbelievably helpful. I have subscribed for another year and can't imagine not having their expertise when we need it!!!