Place Value 3 Understanding that each place value position is ten times more than the place to its right. ____ ____ ____, ____ ____ ____, ____ ____ ____

Let's Review What we Know about Place Value. hundred millions ten millions millions hundred thousands ten thousands thousands hundreds tens ones Pull out unit cubes How many unit cubes = 1 tens rod? How many tens rods = a hundreds block? If you said 10, you are correct! How many hundreds blocks are in

a thousand cube? How many thousands are in 10,000? If you said 10, you are correct 10 10 How many ten thousands

are in 100,000? How many hundred thousands

are in a million? 10 10 again! Notice a pattern? Each time place value is ten times

the place value to its right How to Solve Place Value Problems Always start with your place value chart. Turn your sheet of loose leaf sideways.

Use the lines to help create a chart

to show place value. Remember, only one digit can fit in each box What happens if the problem has 23 tens?

Remember, 10 tens = 100.

Therefore, 20 tens = 200

3 tens= 30.

23 tens = 230 What would 48 tens be equivalent to? Remember 10 tens =100

Therefore 40 tens = 400

8 tens = 80

400 +80 =480.

48 tens = 480 What would 12 hundreds be equivalent to? Remember 10 hundreds =1,000

2 hundreds = 200

1,000 +200 =1,200 What is 32 hundreds? 10 hundreds = 1,000

30 hundreds = 3,000

2 hundreds = 200

3,000 + 200 = 3,200 What is 78 hundreds equivalent to?

10 hundreds = 1,000

70 hundreds = 7,000

8 hundreds = 800

7,000 + 800 = 7,800 What is 108 tens equivalent to?

10 tens =100

In other words 108 tens is the same as saying:

10 tens + 10 tens +10 tens + 10 tens + 10 tens + 10 tens +10 tens + 10 tens + 10 tens + 10 tens + 8 tens

Replace each 10 tens with 100

100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 8 tens

10 hundreds = 1,000

8 tens = 80

1,000 + 80 = 1,080 Now you try:

Look at what we just did.

Look at your place value chart.

What just happened? Each place value is 10 times greater than the value to its right. Listen carefully! It is a great review! Watch This Video!! http://studyjams.scholastic.com/studyjams/jams/math/numbers/place-value.htm 1. What is the value of 38 hundreds?

2. What is the value of 29 tens?

3. What is the value of 93 tens?

4. Write the number 32,908,156 in expanded form.

5. Write the number in standard form:

2 tens + 5 hundreds + 35 thousands

6. Write the number 908,617 in

expanded form.

7. 522,189 How much greater is the digit in the

ten thousands place than the digit in the

thousands place? Let's Review What We Have Learned So Far! Check your work with a crayon, pen, and color pencil.

1.) The value of 38 hundreds = 3,800

2.) The value of 29 tens = 290

3.) The value of 93 tens =930

4.) 30,000,000+2,000,000+ 900,000+8,000+100+50+6

5.) 35,520

6.) 900,000+8,000+600+10+7

7.) ten times greater Let's Review the Answers!

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# Place Value and Multiplying By Tens

Each place value is ten times the digit to its right.

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