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Problem Solving: Adding and Subtracting with Fractions and Decimals

Problem Solving: Adding and Subtracting with Fractions and Decimals. Janie Baszile Cobb 6th Grade Campus GPISD. TEKS Objective. use addition and subtraction to solve problems involving fractions and decimals.

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Problem Solving: Adding and Subtracting with Fractions and Decimals

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  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. 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. Purpose

  4. Review • Let’s 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.aspx?id=73

  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 Don’t add the bottom 9/10 – 2/10 = 7/10; Subtract the top Don’t 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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