Download presentation

Presentation is loading. Please wait.

Published byLogan Rose Modified over 4 years ago

1
Math 9/7-9/10

2
9-7-10 Multiplying and Dividing Decimals Review Multiplying Decimals Animation: www.mathsisfun.com/.../decimals-multiplying- animation.html www.mathsisfun.com/.../decimals-multiplying- animation.html Watch a teacher teach the lesson: http://video.yahoo.com/watch/1434435?fr=yvmtf Computation: You want to buy 5 packs of chicken at $1.99 each. How much will the total be? Estimate to the nearest dollar. 1. You want to buy 3 gallons of Edys Private Selection Icecream. How much will you spend? 2. You need 2 boxes of cereal. How much will you spend?

3
Dividing Decimals… These Goldfish boxes are 2 FOR 6.99. How much is each box? Each cucumber is 58 cents. You have spent $1.74 on cucumbers. How many cucumbers did you buy?

5
You have been taken to another planet. The head alien will not let you go home until you explain how to multiply and divide decimals. Task: Draw a step-by-step instruction manual on the following: Multiplying decimals Dividing Decimals Your manual must have: An example of each type of problem Each step should be labeled.

6
Ticket out of the door… Read the problem Decide which strategy you will use. Solve the problem. Explain your answer.

7
9/8/10 Modeling Multiplication of Decimals d Shade in UP AND DOWN (green pencil).6 or 6/10 Shade in Side to Side (yellow pencil).3 or 3/10 Now, shade in:.6 UP AND DOWN with a green pencil..3 SIDE TO SIDE with a yellow pencil 2. Count the squares that are both green and yellow. 1. What is the multiplication problem? What is the answer?

8
More Practice….4X.8.5x.9.6x.4

9
Another way to model…

10
Use flats, longs, and units…

11
1.Place your 3.2 horizontally. 2. Place the 2.4 vertically 2. Use your base ten blocks to fill in the remaining spaces. 3. The areas you have left will be filled with UNITS.

12
Ticket out of the door… Read the problem Decide which strategy you will use. Solve the problem. Explain your answer.

13
9/9/10 Working from the solution to the problem… 1.Use three hundreds grids OR draw three grids on a piece of graph paper. (10 by 10 array). 2.On grid #1: draw the decimal that is represented vertically (up and down). 3.On grid #2: draw the decimal that is represented horizontally (side by side). 4.On grid #3: draw both decimals and show the product of overlapping colors. 5.What is the problem? What is the product?

14
Practice, practice, practice….. Create the following multiplication models:.6x.8.7x.4.9x.2.6x.7Steps: Draw the first decimal up and down. (Green pencil) Draw the second decimal side by side. (Blue Pencil) Draw both decimals on the third grid with the same colors. Count the colors that overlapped. Write the problem Write the product Check your work by multiplying the decimals.

15
Visual Practice… What would this multiplication problem and product be?

16
Review the patterns.

17
Ticket out of the door… Read the problem Decide which strategy you will use. Solve the problem. Explain your answer.

18
9/10/10 Important Vocabulary

19
How are you doing?

21
Ticket out of the door… Read the problem Decide which strategy you will use. Solve the problem. Explain your answer.

Similar presentations

Presentation is loading. Please wait....

OK

MU15L1D21 Decimal Fractions Unit 15, Lesson 1, Day 2.

MU15L1D21 Decimal Fractions Unit 15, Lesson 1, Day 2.

© 2018 SlidePlayer.com Inc.

All rights reserved.

By using this website, you agree with our use of **cookies** to functioning of the site. More info in our Privacy Policy and Google Privacy & Terms.

Ads by Google

Ppt on edge detection in image Ppt on deforestation in india-2010 Ppt on varactor diode circuit Ppt on any one mathematician lovelace Ppt on variable power supply Ppt on group development process Ppt on appendicitis and nursing care Ppt on mpeg video compression Ppt on mathematics for class 9 Ppt on mauryan period