Adding Proper/Improper Fractions with Unlike Denominators

addend + addend = sum

1.  When the denominators are different determine the lowest common denominator (LCD).

2.  Change each fraction to an equivalent fraction with the LCD.

3.  Add the numerators together and place the sum over the LCD.

4.  Reduce to lowest terms (if necessary).

Adding Fractions 1

Adding Fractions with Unlike Denominators Instructions

The addends must be entered before the Explain button works

• If you need help writing proper fractions, check out:  Identify Fractions.

• If you need help writing mixed numbers, check out:  Enter a Mixed Fraction

You may enter the sum in fraction or mixed number form. In the above example, both 13/10 or 1 3/10 are acceptable.

From Richard E. Rand's: VISUAL FRACTIONS

Adding Fractions 2

Adding Fractions with Unlike Denominators Instructions

The addends must be entered before the Explain button works

• If you need help writing proper fractions, check out:  Identify Fractions.

• If you need help writing mixed numbers, check out:  Enter a Mixed Fraction

The sum must be written as a mixed number and in lowest terms.

From Richard E. Rand's: VISUAL FRACTIONS

Adding Fractions 3

Adding Fractions 4 Calculator

Webmath.com: Adding Fractions

Free JavaScripts provided
by The JavaScript Source

LCM and GCD Calculator

Linked source:  http://www.central.edu/homepages/LintonT/classes/spring01/cryptography/java/gcd.html

Greatest Common Divisor (GCD) corresponds to Greatest Common Factor (GCF)

source:  common.java

Instructions - Equivalent Proper Fractions

From Richard E. Rand's: VISUAL FRACTIONS

Equivalent Fractions

Instructions - Mixed Numbers to Improper Fractions

From Richard E. Rand's: VISUAL FRACTIONS

Instructions - Improper Fractions to Mixed Numbers

From Richard E. Rand's: VISUAL FRACTIONS