Chem review 1

How many significant figures are there in the number 1235?

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How many significant figures are there in the number 0.123?

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How many significant figures are there in the number 1.234?

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How many significant figures are there in the number 1700?

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How many significant figures are there in the number 23.00?

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How many significant figures are there in the number 20.01?

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999 m + 1 km

• 1.999 m

• 1.999 km

• 2 m

• 2 km

How many significant figures will be in the answer to the following question:
7.62 x 6.98 x 3.2645

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How would you write 564,000,000 in scientific notation?

• 5.64 x 10^-7
• 5.64 x 10⁶
• 5.64 x 10⁸
• 56.4 x 10⁷

You know that 12 inches = 1 foot.  Convert 60 inches to feet.

• 720 feet
• 5 feet
• 5 inches
• 72 feet