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1.5 Decimals Expanded Form

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**Jordan measures a desk at 200 cm**

Jordan measures a desk at 200 cm. James measures the same desk in millimeters, and Amy measures the same desk in meters. What is James measurement in millimeters? What is Amy’s measurement in meters? Show your thinking using an equation with exponents. Problem A

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**Represent 1 thousandth and 3 thousandth in standard, expanded, and unit form.**

Write as a fraction. One thousandth = = 1/1000 1/1000 = 1 x (1/1000) 0.001 = 1 x 0.001 1 thousandth Problem 1

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**Represent 13 thousandths in standard, expanded, and unit form.**

Thirteen thousandths = = 13/1000 13/1000 = = (1 x 0.01) + (3 x ) 1 hundredths 3 thousandths 13 thousandths Problem 2

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**Write represent 374 thousandths in standard, expanded, and unit form.**

Problem B

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**Problem 3 Represent 23.413 in word, expanded, and unit form.**

Twenty-five and four hundred thirteen thousandths = /1000 = 25 413/1000 = 2 x x x(1/10) + 1 x 1(1/10) + 3x (1/1000) = 2 x x x x x 0.001 2 tens 5 ones 4 tenths 1 hundredths 3 thousandths Problem 3

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Write the standard, expanded, and unit forms of four hundred four thousandths and four hundred and four thousandths Work with your partner to write these decimals. Problem 4

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**Four hundred and four thousandths**

= 400 4/1000 = 400 4/1000 = 4 x x (1/1000) 4 hundreds 4 thousandths Four hundred and four thousandths

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**Four hundred four thousandths**

= 404/1000 = 0.404 404/1000 = 4 x (1/10) + 4 (1/1000) 0.404 = 4 x x 0.001 4 tenths 4 thousandths Four hundred four thousandths

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**Exit Ticket 1. Express nine thousandths as a decimal**

2. Express twenty-nine thousandths as a fraction 3. Express in words a. Write the expanded for using fractions or decimals b. Express in unit form. Exit Ticket

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Comparing and Rounding Decimals

Comparing and Rounding Decimals

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