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Fraction XII: Subtracting Unlike Denominators PPTFraction XII: Subtracting Unlike Denominators PPT
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PPT

Fraction XII: Subtracting Unlike Denominators

Curated and Reviewed by Lesson Planet

This fractions PowerPoint defines and gives examples of multiples and least common multiple, then models how to list multiples and circle the least common multiple. Each step to use in subtracting fractions with unlike denominators is then displayed as a number problem and explained in text. Students practice this skill by following examples given during the last few slides of the PowerPoint.

79 Views 222 Downloads
Concepts

common multiples, fractions, fractions unlike denominators, least common denominator, least common multiple, subtracting fractions, subtraction

Additional Tags

least common multiple, common multiples, least common denominator, subtracting fractions, fraction, unlike denominator, math
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Resource Details

Grade
4th - 5th
Subjects
Math
2 more...
Resource Type
Presentations
Audience
For Teacher Use
Number of Slides
27

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Initial Fraction Ideas Lesson 22: Overview

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Have young mathematicians subtracting fractions in no time with this manipulative-based math lesson plan. Using their sets of fraction circles, young scholars explore a number of word problems involving the subtraction of fractions...
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Lesson Plan

Initial Fraction Ideas: Lesson 3

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Visual models support young mathematicians as they deepen their fractional number sense in this elementary math instructional activity. Using fraction circle manipulatives, children explore basic unit fractions as they develop...
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Instructional Video

Least Common Multiple

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Prepare your classes for future work by reinforcing multiples and finding least common multiples. Learners see how to identify the least common multiple of a set of numbers. The instructor shows examples including a set of two and a set...
6 mins 3rd - 7th Math
Instructional Video

How to Find the LCM and GCF

Curated OER
Two students have a conversation about the least common multiple (LCM) and greatest common factor (GCF). They briefly describe and give examples of how to find both the LCM and GCF. Note: The dialogue may be difficult to understand,...
2 mins 5th - 8th Math
PPT

Fraction - Subtracting Unlike Denominators

Curated OER
These presentations by Monica Yuskaitis are particularly good. In this one, she shows viewers how to deal with subtracting fractions that have unlike denominator, no small task! This is a tricky process, and this PowerPoint takes young...
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Instructional Video

How Do You Find GCF and LCM?

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Using the numbers 225 and 270, the narrator explains how to find the greatest common factor and the least common multiple. This presentation could be used in conjunction with other videos in a series exploring how to identify prime...
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CCSS: Adaptable
Instructional Video

How Do You Subtract Fractions with Different Denominators?

Curated OER
Combining fractions with unlike denominators. Wait! You can't do that! You have to have common denominators to combine the numerator of fractions. Here's a quick review of changing the denominator by multiplying each fraction by that...
3 mins 4th - 7th Math
Instructional Video

How Do You Find the Greatest Common Factor of Two Numbers by Listing Their Factors?

Curated OER
Greatest common factor, least common multiple, prime factorization, multiples, factors, oh my! The instructor in this video shows how to make different lists of factors to find the greatest common factor. So take a peak and see how to...
6 mins 5th - 8th Math
Instructional Video

How Do You Add Mixed Fractions with Different Denominators by Converting to Improper Fractions?

Curated OER
The first step in adding mixed numbers is to change them into improper fractions. Secondly, make sure the denominators are the same. If they are not the same, then find a common denominator. Make the proper conversions to the numerator...
6 mins 3rd - 8th Math
Instructional Video

How Do You Add Fractions with Different Denominators?

Curated OER
You've got three fractions to add together. Wait! They have unlike denominators. So the first thing you have to do is find the least common denominator. Now multiply the terms so they all have the same denominator. Don't forget to...
2 mins 3rd - 5th Math
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