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Understanding Fractions, Multiples, and Least Common Denominators for Fifth Grade

This presentation by Rosi Barron provides essential teaching tools for fifth-grade teachers focusing on fractions, multiples, and least common denominators (LCD). The objective is for students to list multiples to utilize fractions effectively. Teachers are encouraged to go through the presentation before implementing activities, which include journal components to enhance learning. Activities guide students through finding common multiples and understanding the concept of LCD, facilitating better comprehension of fraction addition and comparison.

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Understanding Fractions, Multiples, and Least Common Denominators for Fifth Grade

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  1. Fractions Multiples & Least Common Denominators By Rosi Barron <--- To Teacher Page

  2. Fifth Grade Fractions: Multiples & Least Common Denominators • Tips: • -Teachers, please read through the whole presentation prior to the activity. • -Each activity is meant to be used in addition to your classroom teaching. • -Each activity includes a journal component. • OBJECTIVE: • TSW list multiples to utilize fractions with Least Common Denominators. TEACHER PAGE

  3. LCD (Least Common Denominator) is the smallest common multiple of two or more denominators. EXAMPLE: The LCD for 1 and 5 is 12. 4 6 Follow these steps: Step 1: Find the common multiples of your denominators. 4: 4x1=4 4x2=8 4x3=12 4x4=16 4x5=20 4x6=24 4x7=28 6: 6x1=6 6x2=12 6x3=18 6x4=24 6x5=30 6x6=36 6x7=42 What is the smallest common multiple OR the least common multiple, the LCM? Click here to find out---->

  4. Is this what you chose? Step 1: Find the common multiples of your denominators. 4: 4x1=4 4x2=8 4x3=12 4x4=16 4x5=20 4x6=24 4x7=28 6: 6x1=6 6x2=12 6x3=18 6x4=24 6x5=30 6x6=36 6x7=42 YOU ARE CORRECT! Click here to go to step 2 ------>

  5. Step 2: Use the least common multiple as the least common denominator, or LCD. 1 x = 1 x = 6 x = 12 (LCD) 6 x 2 = 12 (LCD) 3 x = 3 x = 4 x = 12 (LCD) 4 x 3 = 12 (LCD) 1 x 2 = 2 1 2 6 x 2 = 12 6 12 (LCD) 3 x 3 = 9 3 9 4 x 3 = 12 4 12 (LCD) Fill in the blanks-----> = = Click here to see what you can do now ----->

  6. Compare: 1/6 = OR < OR > 3/4 with LCD 1/6 = 2/12 and 3/4 = 9/12 2/12 < 9/12 YOU CAN Add: 1/6 + 3/4 = ___ with LCD 1/6 = 2/12 and 3/4 = 9/12 2/12 + 9/12 =11/12 Journal what you just reviewed ---->

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