TEKS.MATH.8.2C

22.6 written as a percentage is... 

• 2260%
• 22.6%
• 226%
• 0.226%

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TEKS.MATH.8.2C

When writing a number in scientific notation, the first number must be greater than 1, but less than 10.

• False
• True

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TEKS.MATH.8.2C

When writing a number in scientific notation, the first number must be greater than 1, but less than 10.

• False
• True

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TEKS.MATH.8.2C

Write 9.8 x 10^-5 in standard form

• 0.00098
• 0.000098
• .098
• 98,000

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TEKS.MATH.8.2C

Write 0.000972 in scientific notation.

• 9.72 x 10^-4
• 9.72 x 10^-3
• 972 x 10^-4
• 9.72 x 10⁴

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TEKS.MATH.8.2C

(5 x 10⁶) - (3 x 10⁶)

• 2 x 10¹²
• 2 x 10⁶
• 2 x 1036
• 2 x 10⁰

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TEKS.MATH.8.2C

What is 37% as a decimal?

• 37
• 3.7
• .37
• .037

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TEKS.MATH.8.2C

Divide:
(6.9 x 10⁷) / (2.3 x 10^-3)

• 3 x 10¹⁰
• 3 x 10⁴
• 3 x 10⁵
• 3 x 10¹¹

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TEKS.MATH.8.2C

In 1985 Earth had 4.9 ×10⁹ people living on it and in 2005, earth had 6.4 ×10⁹ living on it. How many more people inhabited Earth in 2005 than in 1985?

• 1.13 x 10⁹

• 1.13 x 10¹⁰

• 1.5 x 10⁸

• 1.5 x 10⁹

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TEKS.MATH.8.2C

True or false: When moving the decimal, if you move left, the exponent gets bigger, and if you move right, it gets smaller.

• True

• False

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TEKS.MATH.8.2C