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Number & Operations in Base Ten

Missing Digits

Directions: Fill in the blanks with digits to make the answer closer to 200 than 300. What is one solution? What other solutions can you find? How many possible solutions are there? How many possible solutions if you can’t use a digit more than once? Source: Marilyn Burns, Graham Fletcher

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Marble Madness 2

Directions: Use the numbers 0 – 9, no more than one time each, to make the following problem true. Jenny has ? ? ? marbles. Her brother has ? ? ? marbles. Together they have ? ? ? marbles. Source:Chase Orton

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Marble Madness 1

Directions: Use the numbers 0 – 9, no more than one time each, to make the following problem true. Barbara has ___ ___ ___ marbles. She gives her sister ___ ___ ___ marbles. She now has ___ ___ ___ marbles left. Source: Chase Orton

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Greatest Difference of Two Rounded Numbers

Directions: Using the digits 0 through 9, find the two numbers that, when rounded to 500 have the greatest possible difference. Each digit can only be used once. Source: Michael Wiernicki and Graham Fletcher

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