PPT-Multiplying Fractions

The Area Model Follows Area Model for Multiplication of Whole Numbers A visual model that assists in learning the standard algorithm Extends easily to multiplying mixed numbers Natural extension to . (Part Two). To find 1/8 of something, we divide that thing by 8.. What if we wanted to know what 3/8 of something was? . You’d be doing the same thing 3 times, so you would multiply by 3. . (72 is a whole number – so it’s all in one group. 72 ÷1 is… 72.) . Unit 5.8. Pages 254-257. . . 2.. 3.. 4.. 1/6. 3/10 . 6/11. 15/64. . Warm Up . Problems. Write each fraction in simplest form.. x =. x =. x 2 =. x =. 1. 3. 4. 5. 3. Unit 5.6. Pages 244-247. . . 2.. 3.. 4.. 30. 96. 144. 120 . Warm Up . Problems. Write each fraction in simplest form.. 15 x 2 . 12 x 8. 9 x 16. 8 x 15. Multiplying whole number Fractions. Objective: . MAFS.3.OA.3.7. Lesson Opening. Solve the two problems below. Write the equation you used to solve the problem.. Jason ate 2 bags of candies. Each bag contained 9 candies. How many candies did Jason eat?. Made Easy!. My momma. says I should “change” my shirt before she “flips” her lid!. © . Mike’s Math Mall. Using…. CCSS 5NBT.B.7. Same!. Change!. Flip!. Because with a little change to a division of fractions’ problem, you’ll be right back to multiplying!. We have added and subtracted fractions. In this lesson we will multiply fractions. When we add and subtract fractions, we count how many of the same size parts there are. When we multiply fractions, the sizes of the parts change. Consider this multiplication problem: . What does it mean?. Let’s show it diagrammatically. .  . Now, half this third…. The shaded blue part is half of a third, which is.  .  . Now try this yourself. . Remember to draw the diagram.. SOL A.2b. REVIEW. Represent . Polynomials Using Algebra . Tiles. Represent x. 2. 3. 2) Represent x. 2. 4x – 2. . REVIEW. Represent . Polynomials Using Algebra . Tiles. 3) Represent 3x. 6.2.1 Multiplying Fractions. 6.2.2 Dividing Fractions. 6.2.3 Dividing Mixed Numbers. Multiplying Fractions. Step #1. : Multiply across the . top. of both fractions. Step #2. : Multiply across the . bottom. How does multiplying by a fraction or by a mixed number affect the size of the product?. How can these tiles be used to find 2/3 of 12?. What is 2/3 of 12 markers? . What is 1/3 of 12 markers? . 4. 1. Remember that fractions are parts of a whole or a part of a set of objects. For example, if a bag of apples contains 10 apples and three of the apples are used to make apple tarts, three-tenths, 3/10, of the apples have been used and seven-tenths, 7/10, of the original set of 10 apples remain. . Multiplying and Dividing Fractions This session will be recorded for learning purposes.  Learning purposes include: a lesson review for students who are absent, students who want to review for a test, etc. Multiplying Decimals Example: 5.63 x 3.7 5 . 63 3 . 7 x 1 2 4 4 39 0 9 8 1 16 + 1 3 1 8 1 0 1 2 two one three . You do not line up the factors by the decimal. Instead, place the number with more digits on top. Chapter 7 Multiplying Fractions MAFS.5.NF.2.4; MAFS.5.NF.2.5 ; MAFS.5.NF.2.6 https://www.youtube.com/watch?v=CcDGRLosAf0&feature=youtu.be Ch 7 Vocabulary 1. denominator​ the number below the bar in a fraction that tells how many equal parts are in the whole or in the group