Scientific Notation- Word Problems

Find the combined mass of Earth and Venus. Earth is approximately 5.9 x 10²⁴ kg and Venus is approximately 4.9 x 10²⁴ kg.

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CCSS.8.EE.A.4

• 1.08 × 10⁴⁸ kg

• 10.8 × 10⁴⁸ kg

• 1.08 × 10²⁵ kg

• 10.8 × 10²⁴ kg

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CCSS.8.EE.A.4

Mercury is about  5.7 x 10⁷ km from the sun.

Neptune is about  4.5 x 10⁹ km from the sun.

What is the difference between Neptune’s and Mercury’s distances from the sun?

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CCSS.8.EE.A.4

• 4.443 × 10⁹ km

• 4.557×10⁹ km

• 1.2 × 10² km

• 10.2 × 10² km

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CCSS.8.EE.A.4

NYC’s population was about 8.1 × 10⁶

LA’s population was about 3.8 × 10⁶

What is the population of these two cities combined?

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CCSS.8.EE.A.4

• 4.3 x 10⁶ people

• 11.9 x 10⁸ people

• 2.5 x 10⁷ people

• 1.19 x 10⁷ people

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CCSS.8.EE.A.4

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?

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CCSS.8.EE.A.4

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?

(6.4 × 10⁹) - (4.9 × 10⁹ )

• 11.3 × 10⁹

  more people

• 2.5 × 10¹⁸

  more people

• 1.5 × 10⁹

  more people

• 1.13 × 10¹⁰

  more people

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CCSS.8.EE.A.4

A factory can make 3 × 10⁴ t-shirts per day,

how many t-shirts will it make in 2.5 ×10² days?

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CCSS.8.EE.A.4

A factory can make 3 × 10⁴ t-shirts per day,

how many t-shirts will it make in 2.5 ×10² days?

(3 × 10⁴ ) ( 2.5 × 10²)

• 7,500,000 shirts

• 75,000,000 shirts

• 6,000,000 shirts

• 5,500,000 shirts

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CCSS.8.EE.A.4