Review

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Review
Write two other forms of the number 8,009,765
Eight million, nine thousand, seven hundred sixty
five 8 million, 9 thousand, 765 8,000,000 9,000
700 60 5
Use gt, lt, or to compare the numbers. 8,009,765
8,012,765
lt
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Today's Math Objective
Understand the place value structure of the base
ten number system.
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Today's Math Lesson
There are 10 hundreds in 1,000.
Our number system is based on the number 10.
There are 10 tens in 100.
Click here to see 10 thousands!
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10,000 !!!
How many boxes are here?
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Mystery Device Number System

• Obtain a mystery device from Mrs. French.
• Work with your partner to devise a plan for
  representing numbers
• with your mystery device. See if you can create
  one set of rules
• for making all of the numbers on the mystery
  device between
• 0 and 120.
• Use the guide and questions on page 53 in the
  MathScape book
• to help you.
• 4. Do the tasks on the bottom of page 53.

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Today's Math Practice

• Applying Skills.
• 3(7) 5(2) ? 2. 4(25) 6(15) 2(10) ?
• 3. 5(1,000) 3(100) 2(10) 9(1) ?
• Georges Mystery Device System
• Large beads 10
• Small beads with arms pointing in 1
• Small beads with arms pointing out 5
• Show the number in Georges system. Draw only
  the beads you need for each number.
• Draw 128 in Georges system.
• 5. What is the number shown?

(p. 80 M.S. 1, 3, 5)
(p. 80 M.S. 7)
(p. 80 M.S. 12)
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Today's Math Practice

• Applying Skills.
• 3(7) 5(2) ? 2. 4(25) 6(15) 2(10) ?
• 3. 5(1,000) 3(100) 2(10) 9(1) ?
• Georges Mystery Device System
• Large beads 10
• Small beads with arms pointing in 1
• Small beads with arms pointing out 5
• Show the number in Georges system. Draw only
  the beads you need for each number.
• Draw 128 in Georges system.
• 5. What is the number shown?

(p. 80 M.S. 1, 3, 5)
21 10 31
100 90 20 210
5,000 300 20 9 5,329
(p. 80 M.S. 7)
Click here for the answer to 4.
7(10) 1(5) 75
(p. 80 M.S. 12)
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(No Transcript)
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Closure
Describe our number system.