Scientific Notation Operations Word Problems

A microgram is equal to 1 x 10 ^-6 grams. How many times as great as a microgram is 1 x 10² grams?

• 1 x 10^-8

• 1 x 10^-4

• 1 x 10⁴

• 1 x 10⁸

Tags

CCSS.8.EE.A.4

The US spends an average of 1.00x10⁴ dollars on each student per year. There are about 7.6x10⁷ students in the US. About how much money total is spent on students per year?

• 7.6 x 10¹¹

• 7.6 x 10²⁸

• 8.6 x 10¹¹

• 8.6 x 10²⁸

Tags

CCSS.8.EE.A.4

As part of a community service project, a school planted 7x10⁵ trees in a year. If there are 3.5x10³ students in the school, how many trees did each student plant?

• 2 x 10⁸

• 2 x 10²

• 3.5 x 10⁸

• 3.5 x 10²

Tags

CCSS.8.EE.A.4

The distance from the sun to the Andromeda galaxy is 1.2 x 10¹⁹ miles. Light travels at a speed of about 6 x 10¹² miles per year (called a light-year). How long does it take light from the sun to the Andromeda galaxy?

• 2.0 x 10⁶ years

• 2.0 x 10⁷ years

• 5.0 x 10²¹ years

• 5.0 x 10⁷ years

Tags

CCSS.8.EE.A.4

The mass of the sun is 1.989 x 10³⁰ kilograms. The mass of the earth is 5.98 x 10²⁴ kilograms. How many times as large as the earth is the sun?

• 3.326 x 10⁵

• 3.326 x 10⁶

• 1.99 x 10³⁰

• 1.99 x 10⁶

Tags

CCSS.8.EE.A.4

Total health care costs in the United States in 2016 was $1.7 x 10¹². The US population was 2.909 x 10⁸. What was the average amount spent per person on health care?

• $5844

• $584.40

• $58.40

• $58440

Tags

CCSS.8.EE.A.4

There are approximately 3.1 x 10⁸ people in the United States. If each person has 4.1 x 10¹ coins, how many coins are there altogether?

• 1.271 x 10¹⁰
• 1.271 x 10⁹
• 1.271 x 10¹¹
• 1.271 x 10⁸

Tags

CCSS.6.EE.A.1

CCSS.6.NS.B.3

If a computer can perform an addition operation in 1.5 x 10^-6 seconds, how long will it take to perform 1500 such operations?

• 2.25 x 10^-3 seconds
• 2.25 x 10^-6 seconds
• 2.25 seconds
• 2.25 x 10⁶ seconds

Tags

CCSS.8.EE.A.4