2.1 decimal place value objective: to read and write decimal numbers in tenths, hundredths,...

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4 2 5 1 3 0011 0010 1010 1101 0001 0100 1011 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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Page 1: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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0011 0010 1010 1101 0001 0100 1011

2.1 Decimal Place Value

Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten-thousandths

Page 2: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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What is a Decimal?• A number that names a whole and part of a

whole

• It shows a value less than 1

• It uses a decimal point to separate the whole number from the decimal part.

• Now give me an example of a decimal…!!!

Page 3: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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123. 4578

Page 4: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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0011 0010 1010 1101 0001 0100 1011

Page 5: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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0011 0010 1010 1101 0001 0100 1011

Page 6: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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0011 0010 1010 1101 0001 0100 10114.973

Page 7: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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0011 0010 1010 1101 0001 0100 10117.0458

Page 8: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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0011 0010 1010 1101 0001 0100 1011

Two thousand nine hundred four ten-thousandths

Page 9: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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2 + 0.01 + 0.007

Page 10: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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• Which is greater, one hundredths or one thousandths?

• Do 0.4 and 0.04 name the same decimal ? Explain

Page 11: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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Homework:Decimal Place Value Advertisements

 1. Take a piece of construction paper to work on. You will also need crayons, markers or colored pencils.

2. Draw a picture of a toy or supermarket item that you would like to sell or that you would like to buy.

3. On the top of your paper, write a price for your toy. Your price must have digits in the tenths and hundredths place. Example: 25.87 LE

4. Next, you must write an advertisement for your price that includes the price of your toy in word form, expanded form and standard form.

Page 12: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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H.W. Example:

 

“The hottest toy is now available for $89.99! Guitar Hero will be the best money you ever spent! Get it now for just eighty-nine dollars and ninety-nine hundredths of a dollar. That is right it’s available for

80 + 9 + 0.9 + 0.09 dollars!”

 

Page 13: 2.1 Decimal Place Value Objective: To read and write decimal numbers in tenths, hundredths, thousandths, and ten- thousandths

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Class Work

Text Book Pg 24

Q 8, 10, 12, 14, 16, 17, 20, 22, 25

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Homework

PW Pg 6 Q 1 to 6, and 10 to 17