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Fractions and Decimals · Summer Term

Adding and Subtracting Fractions with Different Denominators

Adding and subtracting fractions by finding common denominators, including mixed numbers.

Key Questions

  1. Explain why a common denominator is necessary for adding and subtracting fractions.
  2. Construct a method for finding the least common denominator (LCD) of two or more fractions.
  3. Solve addition and subtraction problems involving fractions and mixed numbers.

NCCA Curriculum Specifications

NCCA: Junior Cycle - Number - N.1.3
Class/Year: 2nd Class
Subject: Mathematical Explorers: Building Foundations
Unit: Fractions and Decimals
Period: Summer Term

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