scientific notation word problems

As part of a community service project, a class 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.6.EE.A.1

CCSS.6.EE.B.7

CCSS.6.NS.B.2

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

The mean distance from the sun to Earth is 9.29 x 10⁷ miles. Jupiter's mean distance from the sun is 4.8388 x 10⁸ miles. What is the difference between these two distances in miles? 

• 4.3092 x 10¹
• 3.9098 x 10⁷
• 3.9098 x 10⁸
• 5.7678 x 10⁸

Tags

CCSS.6.EE.A.1

CCSS.6.NS.B.3

The US spends an average of 1.02x10⁴ 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?

• 7.752 x 10¹¹
• 7.752 x 10²⁸
• 8.62 x 10¹¹
• 8.62 x 10²⁸

Tags

CCSS.6.EE.A.1

CCSS.6.NS.B.3

The distance from the sun to the Andromeda galaxy is 1.2 x 10¹⁹ miles. Light travels at a speed of 5.88 x 10¹² miles per year (called a light-year). How long does it take light from the sun to the Andromeda galaxy?

• 2.04 x 10⁶ years
• 2.04 x 10⁷ years
• 7.056 x 10²¹ years
• 7.056 x 10⁷ years

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

The mass of he sun is 1.989 x 10³⁰ kilograms. The mass of the earth is 5.98 x 10²⁴ kilograms. How many times bigger is the sun than the earth?

• 3.326 x 10⁵
• 3.326 x 10⁶
• 1.99 x 10³⁰
• 1.99 x 10⁶

Tags

CCSS.6.NS.B.3

CCSS.6.RP.A.1

An airplane traveled 5.7 × 10² miles per hour for 1.4 × 10¹ hours. How far did the airplane travel?

• 798 miles

• 40.7 miles

• 7.98 miles

• 7980 miles

Tags

CCSS.6.EE.A.1

CCSS.6.NS.B.3

What is 234,000,000 in scientific notation?

• 2.34 x 10⁸
• 23.4 x 10⁷
• 2.34 x 10^-8
• 2.34⁸

Tags

CCSS.6.EE.A.1

What is 0.0000312 in scientific notation?

• 3.12 x 10^-5
• 31.2 x 10^-6
• 3.12^-5
• 3.12 x 10⁵

Tags

CCSS.6.EE.A.1

What is the basic numeral for 2.35 x 10⁸?

• 235,000,000
• 23,500,000,000
• 0.0000000235
• 0.00000000235

Tags

CCSS.6.EE.A.1