Home

Math by Grades

Pre-K

Kindergarten

Grade 1

Grade 2

Grade 3

Grade 4

Grade 5

Grade 6

Grades 7 and 8

Grades 9 and 10

Grades 11 and 12

Math by Topics

Arithmetic

Algebra

Geometry Help

$Math Word Problems$

Trigonometry

Statistics

$Probability$

PreCalculus

Calculus

$Set Theory$

Matrices

Vectors

Math Worksheets $Math Worksheets$

_interactive

Math for Specific Tests $SAT Math$
$ACT Math$
$GMAT Math$
$GRE Math$
$High School, Regents$

California Standards

GCSE Maths

A Level Maths

Math Fun and Games $Math Trivia$
$Math Games$

Fun Games

Mousehunt Guide

Exam Preparation

SAT Preparation

ACT Preparation

GRE Preparation

GMAT Preparation

Math in Video Lessons $Basic Algebra$

Intermediate Algebra

College Algebra

High School Geometry

College Calculus

Linear Algebra

$Engineering Math$
$Singapore Math$
Science

Biology

Chemistry

Science Projects

High School Biology

High School Chemistry

High School Physics

GCSE Biology

Others

English Help

ESL, IELTS, TOEFL

Programming

Animal Facts

Tutoring Services

$What's New$

Subtracting Exponents

When dividing numbers in exponent notation with the same base, we subtract the exponents.

Consider:

Text Box: a5 ÷ a2 = = = a3

This is the second law of exponents:

Example:

Simplify the following expressions, giving your answers in exponent form

Text Box: a) 43 ÷ 42 b) y8 ÷ y6 c) d) p5 ÷ p3 ÷ p

Solution:

Text Box: a) 43 ÷ 42 = 43–2 = 41 = 4 b) y8 ÷ y6 = y8–6 = y2 c) d)

Common Error : The second law of exponent does NOT apply to subtraction of numbers in exponent notation.

The following video shows more examples of subtraction of exponents:

Custom Search

We welcome your feedback, comments and questions about this site - please submit your feedback via our Feedback page.

© Copyright 2005, 2009 - onlinemathlearning.com
Embedded content, if any, are copyrights of their respective owners.

Custom Search

Amazon.com Widgets