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Which numbers represent the powers of ten?

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$4.50 x 10

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10²

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5²

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5³ = ?

0.13 x 10

1.4 x 1,000

0.179 x 1,000

How much for 10 pens from the school store?

How much will it cost for 10 pencils and one notebook?

Explain Rico's mistake.

Sample Answer: 34 centimeters