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Math Review

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Stretch Your Thinking 12. Mr. Thomas writes 4,964 on the board. Amy says the value of the underlined digit is 9. Chris said the value is 900. Which student is correct? Explain

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Stretch Your Thinking Sara is thinking of a number. When she rounds her number to the nearest hundred she gets 700. What is the greatest number Sara can be thinking of? Explain

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Stretch Your Thinking 17. How many zeros are in the standard from of six hundred thousand, twenty? Explain

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Stretch Your Thinking 19. When you round a number, which digit in the number helps you decide to round up or round down? Explain your answer.

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Rounding Rules If the digit to the right of the rounding place is 5 or more, the digit in the rounding place increases by 1 and the values of the places to the right of the rounding place change to zero. If the digit to the right of the rounding place is less than 5, the digit in the rounding place does not change and the values of the places to the right of the rounding place change to zero.

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Stretch Your Thinking What number does this drawing represent? What would the number be if you took away 200?

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Stretch Your Thinking What is the pattern? 10x3=30 100x3=300 1,000x3=3,000 What comes next? What’s the pattern?

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Stretch Your Thinking Write 460,53 in expanded form.

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Stretch Your Thinking Write 45,039 In word form

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Stretch Your Thinking Write 300,000+3, In Standard Form

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Stretch Your Thinking 25. A number, containing no zeros, changed to 310,000 after it was rounded. To what place was the number rounded? Explain how you know.

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Stretch Your Thinking Find the unknown value in the number sentence: 8 x n=56 n=

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Classwork: Journal page 14 Homework: page 9 Remembering: page 10* *(Multiplication group replaces 1-5 of remembering; but does 6-10)

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