How many bricks? Student activity Play

How many different divisors does a natural number have? A more difficult problem Student activity Play

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How many more? Student activity Play

How many more? Student activity Play

How many such sequences are there? Student activity Play

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How many times? Student activity Play

How many values define a polynomial? Student activity Play

How many were there? Student activity Play

How many were there? Student activity Play

How many were there? A more difficult problem Student activity Play

How many? Student activity Play

How many? Student activity Play

How many? (1) Student activity Play

How many? (2) Student activity Play

How many? A more difficult problem Student activity Play

How metals react with acids Student activity Play

How metals react with oxygen Student activity Play

How metals react with water Student activity Play

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How much did it cost before? Student activity Play

How much do they weigh together? Student activity Play

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How much does it cost? Student activity Play

How much does it cost? Student activity Play

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