This topic covers the concept involved in addition of two or more fractions with unlike denominators using common denominators and representation in patterns and blocks.
Topic: Add Unlike Fractions
When adding unlike fractions, find equivalent fractions with a common denominator (like fractions)
A common denominator can be obtained by multiplying both the denominators
To add like fractions, add the numerators and retain the denominator
Express the sum in its simplest form by dividing the numerator and the denominator by the greatest common fraction (GCF)
Topic: Add Using Clock Fractions
A clock face can be used to model fractions with 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, or 60 in the denominator
1 hour = 60 minutes
Any fraction can be converted to minutes and represented in the clock face
Similarly any measure of clock face can be represented as a fraction
To add two fractions, one can add the equivalent clock face representations and represent their sum as a fraction
Other Resources on Add Fractions with Unlike Denominators
Other Resources
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