STANDARDS CCSS.MATH.CONTENT.4.NF.B.3Understand a fraction a/b with a > 1 as a sum of fractions 1/b. CCSS.MATH.CONTENT.4.NF.B.3.CAdd and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction. LESSON TIME 20-30 minutes SUMMARY This lesson for Grades 4-5 uses doughnuts to…
VIDEO: Adding and Multiplying Fractions with Like Denominators This video introduces fractions, addition, multiplication using like denominators with plenty of examples. Denominator and Down both begin with the letter ‘D’, so that’s an easy mnemonic to teach the students. https://www.youtube.com/watch?v=tuTa4fhhYTc&list=PLlFtdlHUZsQsvMvCwsulB7dYftqoO81TR&index=4
Standards CCSS.MATH.CONTENT.4.NF.B.3.CAdd and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction. Summary Now that you understand what a fraction is, what’s a numerator and what’s a denominator, you can start doing operations with fractions.…
Adding and Subtracting fractions with a Common Denominator: Multi-step problems
Students often struggle with multi-step problems for a lot of reasons. In my experience, the most common one is they stop too soon. For example, in the first lesson below, the student may add up the fractions of the rice gathered by each of the two sisters and stop there. However, the question asks, “How…
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