Problem Solving: Adding and Subtracting with Fractions and Decimals - PowerPoint PPT Presentation

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Problem Solving: Adding and Subtracting with Fractions and Decimals

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The purpose is to improve problem-solving skills using addition and subtraction ... Students will be able to use key concepts to add ... Fraction Mania! Hooray! ... – PowerPoint PPT presentation

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Title: Problem Solving: Adding and Subtracting with Fractions and Decimals


1
Problem Solving Adding and Subtracting with
Fractions and Decimals
  • Janie Baszile
  • Cobb 6th Grade Campus
  • GPISD

2
TEKS Objective
  • use addition and subtraction to solve problems
    involving fractions and decimals

3
Purpose
  • The purpose is to improve problem-solving skills
    using addition and subtraction in fractions and
    decimals.
  • Students will be able to use key concepts to add
    and subtract fractions.

4
Review
  • Lets review some common fractions by playing a
    game of concentration.
  • Click on the sit below. Make sure you choose
    fractions when you get to the site.
  • http//illuminations.nctm.org/tools/tool_detail.as
    px?id73

5
Instructions
1. When adding fractions, use a common
denominator.
2. Add the numerators and keep the denominators
the same.
3.When subtracting fractions, use a common
denominator. 4. Subtract the numerators and keep
the denominators the same.
6
HOW TO ADD FRACTIONS Introducing first addend
second addend sum
7
How to Add Fractions
o
8
HOW TO SUBTRACT FRACTIONS Introducing minuend
subtrahenddifference
9
How to Subtract Fractions
10
Guided Practice
  • 1/4 1/4 1/4 3/4 Add the top
  • Dont add the bottom
  • 9/10 2/10 7/10 Subtract the top
  • Dont subtract the bottom

11
Independent Practice
  • Add .. Numerators only.
  • 1/5 1/5___ 1/10 2/10___ 1/6 4/6 ___
  • 1/8 2/8___ 5/9 3/9 ___
  • Subtract.. Numerators only.
  • 9/10 8/10 ___ 4/7 2/7 ___
  • 6/9 3/9 ___ 4/5 3/5__ 11/12 4/12 ___

12
Summary
  • This lesson will enable students to..
  • ..gain an understanding of fractions in multiple
    operations.
  • ..demonstrate the ability to add and subtracts
    independently with success.

13
Fraction Mania! Hooray!
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