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Number & Operations in Base Ten

Decimal Subtraction 2

Directions: Use the digits 1 to 9, at most one time each, to make a difference with the least possible value. Source: Owen Kaplinsky and Robert Kaplinsky

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Decimal Addition 3

Directions: Use the digits 1 to 9, at most one time each, to make a sum with the greatest possible value. Source: Owen Kaplinsky and Robert Kaplinsky

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Decimal Subtraction

Directions: Use the digits 1 to 9, at most one time each, to make two true statements. Source: Owen Kaplinsky

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Decimal Addition 2

Directions: Use the digits 1 to 9, at most one time each, to make two true statements. Source: Owen Kaplinsky

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Place Value

Directions: Use the digits 1 to 9, at most TWO times each, to create a nine-digit number and it’s corresponding place values. Source: Owen Kaplinsky

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Multiplication of large numbers

Directions: Use the digits 1 to 9, at most one time each, to create two numbers that have a product as close to 500,000 as possible. NOTE: You may use any length of factors as you would need. Ex 8 digit by 1 digit. 4 digit by 3 digit. Source: Miles Knight

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Evaluating a Decimal Expression

Directions: Using the whole numbers 0 through 9, no more than one time each, make the value of this expression is as large as possible. Challenge: Try to make this expression as close to 30 as possible (for an added challenge, try to make this expression as close to 30 as possible using just the digits 1 through 9). Source: …

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Rounding Decimals

Directions: Use the whole numbers 1 through 6, at most one time each, to fill in the boxes and make the largest (or smallest) number that rounds to 5 Source: Annie Forest

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Decimal Product Close To 50

Directions: Use the numbers 1 through 9 at most one time each so that the product is as close to 50 as possible. Source: Robert Kaplinsky

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