2. Multiplying By Multiples of 10 © 2012 Elizabeth Hill

3. What are we learning? Our Standard Says Students will further develop their understanding of multiplication of whole numbers and develop the ability to apply it in problem solving by understanding the effect on the product when multiplying by multiples10. © 2012 Elizabeth Hill

4. What are we learning? I can correctly multiply a number by 10’s and 100’s numbers. © 2012 Elizabeth Hill

5. Let’s Review What are the 4 ways to show multiplication? Groups of 4 x 6 says 4 groups of 6 Rows of 4 x 6 says 4 rows of 6 Times I Add 4 x 6 says 4 times I add 6 Times I Count By 4 x 6 says 4 times I count by 6 © 2012 Elizabeth Hill

6. A 3 rd Grader’s Best Friend These are called factors! Factors are the numbers you are multiplying. These are products! © 2012 Elizabeth Hill

7. Follow each number from top to bottom or from left to right. What is happening when you go from top to bottom or from left to right from a number? That’s right! You are just counting by that number. Remember if you can count by a number you can multiply. © 2012 Elizabeth Hill

8. Can you use what you know to find the missing numbers? Hint Find which factor is easiest to count by: the one on top or the one on bottom. © 2012 Elizabeth Hill

9. What are mulitples of 10? The multiplies of 10 are the numbers you get when counting by 10. © 2012 Elizabeth Hill

10. To be able to multiply by multiples of 10, you have to know your basic facts. 30 x 6= 50 x 3= 400 x 7= 800 x 4= © 2012 Elizabeth Hill

11. You can also use a multiplication chart to find the answer to a multiplication problem. Let’s use the chart to find some products! Find the answer to 4 x 6= Find the answer to 8 x 7= Find the answer to 3 x 9= © 2012 Elizabeth Hill

12. Introducing… Zero the Hero © 2012 Elizabeth Hill

13. Zero the Hero Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT!

14. How can Zero the Hero help you? 30 X 4 Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT! 1 Zero 120 30 X 4=120 © 2012 Elizabeth Hill

15. How can Zero the Hero help you? 50 X 6 Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT! 1 Zero 300 50 X 6=300 © 2012 Elizabeth Hill

16. How can Zero the Hero help you? 70 X 3 Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT! 1 Zero 210 70 X 3=210 © 2012 Elizabeth Hill

17. How can Zero the Hero help you? 90 X 8 Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT! 1 Zero 720 90 X 8=720 © 2012 Elizabeth Hill

18. How can Zero the Hero help you? 60 X 7 Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT! 1 Zero 420 60 X 7=420 © 2012 Elizabeth Hill

19. Try These With Your Partner 40 X 8 20 X 5 50 X 9 60 X 3 90 X 7 40 X 5 © 2012 Elizabeth Hill

20. You and your partner only need 1 sheet of paper between you. 1. Fold the paper into quarters. 2. Write one multiplying by multiple of ten problem in each section. Ex: 70 x 3= 3. Now one of you take the paper and ball it up. 4. The other one throw it across the room. SNOWBALL FIGHT © 2012 Elizabeth Hill

21. Now open your paper and work with your partner to solve it. © 2012 Elizabeth Hill

22. Time for a Challenge 300 X 4 Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT! 2 Zeros 1200 300 X 4=1,200 © 2012 Elizabeth Hill

23. Time for a Challenge 500 X 8 Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT! 2 Zeros 4000 500 X 8=4,000 © 2012 Elizabeth Hill

24. Time for a Challenge 900 X 6 Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT! 2 Zeros 5400 900 X 6=5,400 © 2012 Elizabeth Hill

25. Tricky, Tricky 7000 X 6 Zero is the hero. He just won’t stop! All you do is count him, At the top! You add those zeros, To the basic fact, And you will get the answer, Just like THAT! 3 Zeros 42000 7000 X 6=42,000 © 2012 Elizabeth Hill

26. Test Practice There are 50 chips in a bag. If David buys 7 bags of chips, how many chips will he have? a.35 b.350 c.300 d.120 © 2012 Elizabeth Hill

27. Test Practice If 9 x 7 is 63, then what is 900 x 7? a.63 b.630 c.6300 d.1600 © 2012 Elizabeth Hill

28. Test Practice When baking chocolate chip cookies, Mrs. Hill wanted to put 20 chocolate chips in each cookie. If she bakes 30 cookies, how many total chocolate chips will she need? a.50 b.60 c.600 d.500 © 2012 Elizabeth Hill

29. Thank you for purchasing from Tricks of the Trade. I use this Powerpoint presentation in my classroom as a 3 day unit. I focus on using the multiplication chart for the first day. The next day I teach the song and practice with multiplies of tens. The final day we practice multiplying with multiples of one hundred. I use several games and other activities that you can find in my store in my TpT store. I also use several videos which you can see on my blog at http://tricksoftheteachingtrade.blogspot.com http://tricksoftheteachingtrade.blogspot.com or “Like” my Facebook https://www.facebook.com/tricksoftheteachingtrade © 2012 Elizabeth Hill: Tricks of the Teaching Trade. All rights reserved. Purchase of this unit entitles the purchaser the right to reproduce the pages in limited quantities for classroom use only. Duplication for an entire school, an entire school system or commercial purposes is strictly forbidden without written permission from the publisher. Tricks of the Teaching Trade, 1109 Summerfield Dr. Cairo, GA 39828, http://tricksoftheteachingtrade.blogspot.com/ Copying any part of this product and placing it on the internet in any form (even a personal/classroom website) is strictly forbidden and is a violation of the Digital Millennium Copyright Act (DMCA). These items can be picked up in a google search and then shared worldwide for free.http://tricksoftheteachingtrade.blogspot.com/