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Decimal Place Value Disk

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At the beginning of math class, the teacher gave bags of place value disks to every student. This was in Grace’s bag. What do you notice about her disks?

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Grace put her disks on a place value chart. Isn’t it easier to see her disks this way? What number is represented by her place value disks?

ones tenths hundredths thousandths

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Grace put her disks on a place value chart. Isn’t it easier to see her disks this way? What number is represented by her place value disks?

ones tenths hundredths thousandths

3 5 4 3

Three and five hundred forty-three thousandths

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This was in Lucas’s bag. What do you notice about his disks? What number is represented by his place value disks?

ones tenths hundredths thousandths

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This was in Lucas’s bag. What do you notice about his disks? What number is represented by his place value disks?

ones tenths hundredths thousandths

3 3 5 4

Three and three hundred fifty-four thousandths.

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Compare the number Lucas made to the number Grace made by typing the symbol <, >, or = in the circle.

3.543

3.354

Lucas

Grace

🍐 This is a Pear Deck Drawing Slide

🍐 To edit the type of question, go back to the "Ask Students a Question" in the Pear Deck sidebar.

Questions to ask:

How can you compare the decimals?

What to look for:

Students who can say the numbers they made accurately

Students who can write the numbers they made accurately

Students who can identify the number of hundreds, tens, ones, tenths, hundredths and thousandths

Students who can compare the decimals accurately

About the Math

Represent decimals with base ten models and number lines.�Decimals can be represented in a variety of ways. Base ten models and number lines are essential. One can modify a hundred chart to show the relationship between 0.00 and 1.00 or other decimals. Note that reliance on money can be problematic as place values are expanded.

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Compare the number Lucas made to the number Grace made by typing the symbol <, >, or = in the circle.

3.543

3.354

<

Lucas

Grace

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I looked at the largest place value. This is the ones place. Both numbers have a three. The next largest place value is the tenths place. Lucas has .3 and Grace has .5 so Grace’s number is greater.

Lucas

Grace

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The teacher asked the students to use this website to build the number 4.692. Use the virtual manipulatives to build the same number.

Choose Thousandths to Ones

If you want the place value chart, leave the check next to that. If you do not want it, click on the check to uncheck it.

Click go

🍐 This is a Pear Deck Web Slide.

🍐 To edit the type of question, go back to the "Ask Students a Question" in the Pear Deck sidebar.

Questions to ask:

How many numbers did you build with __ thousandths?__ hundredths? __ tenths? __ ones?

How would you write this number?

Can you write an equation to show this number?

Tell me everything that you know about this number.

What to look for:

Students who can say the numbers they made accurately

Students who can write the numbers they made accurately

Students who can identify the number of hundreds, tens, ones, tenths, hundredths and thousandths

About the Math

Represent decimals with base ten models and number lines.�Decimals can be represented in a variety of ways. Base ten models and number lines are essential. One can modify a hundred chart to show the relationship between 0.00 and 1.00 or other decimals. Note that reliance on money can be problematic as place values are expanded.

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The teacher asked the students to use this website to build the number 4.692. Grace built this number. She is incorrect. What number did she build and what does she need to do to fix her representation?

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Grace’s Number

To fix the representation Grace needs to

🍐 This is a Pear Deck Drawing Slide

🍐 To edit the type of question, go back to the "Ask Students a Question" in the Pear Deck sidebar.

Questions to ask:

How would you write this number?

How is it incorrect?

What error do you think she made?

Tell me everything that you know about this number.

What to look for:

Students who can say the numbers they made accurately

Students who can write the numbers they made accurately

Students who can identify the number of hundreds, tens, ones, tenths, hundredths and thousandths

About the Math

Represent decimals with base ten models and number lines.�Decimals can be represented in a variety of ways. Base ten models and number lines are essential. One can modify a hundred chart to show the relationship between 0.00 and 1.00 or other decimals. Note that reliance on money can be problematic as place values are expanded.

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Grace’s Number

To fix the representation Grace needs to remove three .1 and add three more .01.

4 962

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Use the virtual manipulatives to build a number smaller than 2.874.

To clear the mat click the red circular button under the word go!.�
After you build your number, write your number down in your math journal or on a piece of paper so you can share with the class.

🍐 This is a Pear Deck Web Slide.

🍐 To edit the type of question, go back to the "Ask Students a Question" in the Pear Deck sidebar.

Questions to ask:

How would you write this number?

How do you know your number is smaller than 2.874?

What to look for:

Students who can say the numbers they made accurately

Students who can write the numbers they made accurately

Students who can identify the number of hundreds, tens, ones, tenths, hundredths and thousandths

About the Math

Represent decimals with base ten models and number lines.�Decimals can be represented in a variety of ways. Base ten models and number lines are essential. One can modify a hundred chart to show the relationship between 0.00 and 1.00 or other decimals. Note that reliance on money can be problematic as place values are expanded.

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Your Number

What number did you build?

How many wholes? _______�

How many tenths? _______�

How many hundredths? _______�

How many thousandths? _______

🍐 This is a Pear Deck Drawing Slide

🍐 To edit the type of question, go back to the "Ask Students a Question" in the Pear Deck sidebar.

Questions to ask:

What number did you build?

How do you know your number is smaller than 2.874?

What two whole numbers is this decimal between?

What to look for:

Students who can say the numbers they made accurately

Students who can write the numbers they made accurately

Students who can identify the number of ones, tenths and hundredths, and thousandths

About the Math

Represent decimals with base ten models and number lines.�Decimals can be represented in a variety of ways. Base ten models and number lines are essential. One can modify a hundred chart to show the relationship between 0.00 and 1.00 or other decimals. Note that reliance on money can be problematic as place values are expanded.

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Circle the numbers you could have built? Why?

2.985 3.791 1.942 2.874

2.873 0 .491 2.920

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Use the virtual manipulatives to build a number larger than 2.874.

To clear the mat click the red circular button under the word go!.�
After you build your number, write your number down in your math journal or on a piece of paper so you can share with the class.

🍐 This is a Pear Deck Web Slide.

🍐 To edit the type of question, go back to the "Ask Students a Question" in the Pear Deck sidebar.

Questions to ask:

How would you write this number?

How do you know your number is larger than 2.874?

What to look for:

Students who can say the numbers they made accurately

Students who can write the numbers they made accurately

Students who can identify the number of hundreds, tens, ones, tenths, hundredths and thousandths

About the Math

Represent decimals with base ten models and number lines.�Decimals can be represented in a variety of ways. Base ten models and number lines are essential. One can modify a hundred chart to show the relationship between 0.00 and 1.00 or other decimals. Note that reliance on money can be problematic as place values are expanded.

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Your Number

What number did you build?

How many wholes? _______�

How many tenths? _______�

How many hundredths? _______�

How many thousandths? _______

🍐 This is a Pear Deck Drawing Slide

🍐 To edit the type of question, go back to the "Ask Students a Question" in the Pear Deck sidebar.

What number did you build?

How do you know your number is larger than 2.874?

What two whole numbers is this decimal between?

What to look for:

Students who can say the numbers they made accurately

Students who can write the numbers they made accurately

Students who can identify the number of ones, tenths and hundredths, and thousandths

What to look for:

Students who can say the numbers they made accurately

Students who can write the numbers they made accurately

Students who can write at least one equation to show standard form

Students who can identify the number of hundreds, tens, ones, tenths and hundredths

Students who can show the number as an equation in expanded form

About the Math

Represent decimals with base ten models and number lines.�Decimals can be represented in a variety of ways. Base ten models and number lines are essential. One can modify a hundred chart to show the relationship between 0.00 and 1.00 or other decimals. Note that reliance on money can be problematic as place values are expanded.

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Circle the numbers you could have built? Why?

2.985 3.791 1.942 2.874

2.873 0 .491 2.920

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Practice - What is this number?

How many wholes? _______�

How many tenths? _______�

How many hundredths? _______�

How many thousandths? _______

Number:

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Practice - What is this number?

How many wholes? _______�

How many tenths? _______�

How many hundredths? _______�

How many thousandths? _______

Number:

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Practice - What is this number?

How many wholes? _______�

How many tenths? _______�

How many hundredths? _______�

How many thousandths? _______

Number:

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Practice - What is this number?

How many wholes? _______�

How many tenths? _______�

How many hundredths? _______�

How many thousandths? _______

Number: