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Multiplying problems with multi - digits

Multiplying problems with multi - digits. I can multiply multi-digit numbers using whole numbers. Essential Questions. What are whole numbers? How do you multiply multi-digit whole numbers? What is a Place Holding Zero? Why do you use a Place Holding Zero?

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Multiplying problems with multi - digits

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  1. Multiplying problems with multi - digits • I can multiply multi-digit numbers using whole numbers.

  2. Essential Questions What are whole numbers? How do you multiply multi-digit whole numbers? What is a Place Holding Zero? Why do you use a Place Holding Zero? What is estimation? Why should you use it to determine the reasonableness of your answer?

  3. Review Time!! • As you all know... we have been working on new strategies for multiplying multi-digit problems. • Please get out your slates and be ready in 10...9...8... • I am going to put a problem on the screen. You will then write what type of strategy is being used.

  4. WHAT IS THIS STRATEGY? Lattice!! 20 x 70 1400 20 x 1 20 1400 + 20 = 1420 + = + + + + 70 x 9 630 1 x 9 9 = 630 + 9 = 639 = = = = + 2059 1400 + 630 = 2030 20 + 9 = 29

  5. What is this strategy? 1 34 x 23 Standard 10 2 6 8 0 + 782

  6. Now that were refreshed... • It is important to know these strategies as TOOLS! • If they do not help you, then do what works best for YOU!

  7. Let’s practice a few together... • 1,763 x 9 = • 342 x 76 = • 78 x 63 = 15,867 25,992 4,914

  8. Math Review (You Do) • 1, 234 x 9 • 234 x 34 • It is the beginning of school, and each teacher has bought 130 notebooks for their classes. If they are going to have 26 students, how many notebooks does each child get? • 23 x 8 • 34,567 x 7

  9. closure • Please write on your slate 2 things you are going to do in order to get 100 % on the formative. • Be ready to share.

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