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X 10 thousands hundreds tens ones Place Value 18.

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Presentation on theme: "X 10 thousands hundreds tens ones Place Value 18."— Presentation transcript:

1

2 x 10 thousands hundreds tens ones Place Value 18

3 x 10 x 10 thousands hundreds tens ones Place Value 18

4 x 10 x 10 x 10 thousands hundreds tens ones Place Value 18

5 Reflection: What is multiplicative place value?
Investigation: Draw a multiplicative place value chart from memory. Explain multiplying by 10 to get the value of the column on the left to a friend. Reflection: What is multiplicative place value? Problem Solving What number is missing from this place value chart? Place Value 18

6 x 10 x 10 x 10 thousands hundreds tens ones ÷ 10 Place Value 18

7 x 10 x 10 x 10 thousands hundreds tens ones ÷ 10 ÷ 10 Place Value 18

8 Reflection: What is multiplicative place value?
Investigation: Draw a multiplicative place value chart from memory. Explain dividing by 10 to get the value of the column on the right to a friend. Reflection: What is multiplicative place value? Problem Solving What number is missing from this place value chart? Place Value 18

9 x 10 x 10 x 10 thousands hundreds tens ones 8 Place Value 18

10 x 10 x 10 x 10 thousands hundreds tens ones 8 x 10 = 80 Place Value 18

11 thousands hundreds tens ones 8 x 10 = 80 80 x 10 = 800 x 10 x 10 x 10
Place Value 18

12 thousands hundreds tens ones 8 x 10 = 80 80 x 10 = 800 800 x 10 = 8000
Place Value 18

13 thousands hundreds tens ones 8 x 10 = 80 80 x 10 = 800 800 x 10 = 8000
85 Place Value 18

14 thousands hundreds tens ones 8 x 10 = 80 80 x 10 = 800 800 x 10 = 8000
Place Value 18

15 Draw a multiplicative place value chart.
Investigation: Draw a multiplicative place value chart. Place cards in columns to make a number. Record the number. Move the digits one column to the left. Record the new number. What happened to the value of the number when you moved the digits one column to the left? Reflection: Why do digits move one place to the left when we multiply by 10? Problem Solving Alex placed a digit in the hundreds column. He multiplied it by 10.   Which column is the digit in now? What is the value of the digit now? Place Value 18

16 80 thousands hundreds tens ones ÷ 10 ÷ 10 ÷ 10 x 10 x 10 x 10
Place Value 18

17 80 ÷ 10 = 8 thousands hundreds tens ones ÷ 10 ÷ 10 ÷ 10 x 10 x 10 x 10
Place Value 18

18 80 ÷ 10 = 8 800 thousands hundreds tens ones ÷ 10 ÷ 10 ÷ 10 x 10 x 10
Place Value 18

19 80 ÷ 10 = 8 800 ÷ 10 = 80 thousands hundreds tens ones ÷ 10 ÷ 10 ÷ 10
x 10 x 10 x 10 thousands hundreds tens ones ÷ 10 ÷ 10 ÷ 10 80 ÷ 10 = 8 800 ÷ 10 = 80 Place Value 18

20 80 ÷ 10 = 8 800 ÷ 10 = 80 8000 thousands hundreds tens ones ÷ 10 ÷ 10
x 10 x 10 x 10 thousands hundreds tens ones ÷ 10 ÷ 10 ÷ 10 80 ÷ 10 = 8 800 ÷ 10 = 80 8000 Place Value 18

21 80 ÷ 10 = 8 800 ÷ 10 = 80 8000 ÷ 10 = 800 thousands hundreds tens ones
x 10 x 10 x 10 thousands hundreds tens ones ÷ 10 ÷ 10 ÷ 10 80 ÷ 10 = 8 800 ÷ 10 = 80 8000 ÷ 10 = 800 Place Value 18

22 80 ÷ 10 = 8 850 800 ÷ 10 = 80 8000 ÷ 10 = 800 thousands hundreds tens
x 10 x 10 x 10 thousands hundreds tens ones ÷ 10 ÷ 10 ÷ 10 80 ÷ 10 = 8 800 ÷ 10 = 80 8000 ÷ 10 = 800 850 Place Value 18

23 x 10 x 10 x 10 thousands hundreds tens ones ÷ 10 ÷ 10 ÷ 10 80 ÷ 10 = 8 800 ÷ 10 = 80 8000 ÷ 10 = 800 850 ÷ 10 = 85 Place Value 18

24 Draw a multiplicative place value chart.
Investigation: Draw a multiplicative place value chart. Place cards in the tens, hundreds or thousands columns to make a number. Record the number. Move the digits one column to the right. Record the new number. What happened to the value of the number when you moved the digits one column to the right? Reflection: Why do digits move one place to the right when we divide by 10? Problem Solving Alex placed a digit in the hundreds column. He divided it by 10.   Which column is the digit in now? What is the value of the digit now? Place Value 18

25 Place Value 18

26 Make a place value slide:
More Investigations: Sit with a friend. Make a place value slide: Take a sheet of paper and cut slits into which you thread a strip of paper. Record a number onto the strip. Move it between place value columns. Explain what number you multiplied or divided by? Reflection: Why are we multiplying by 10 when we move digits to the left and dividing by 10 when we move digits to the right? Place Value 18

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