Scientific Notation Operation Review

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

A box contains 5 X 10³ paper clips. The mass of each paper clip is 8 X 10^-4 kilograms. What is the combined mass of the paper clips in the box?

• 4 kilograms

• 40 kilograms

• 4 X 10⁷ kilograms

• 4 X 10^-7 kilograms

In a biology experiment, four groups of fruit flies were fed different fruits. At the end of the experiment, the average lengths of the fruit flies were recorded. Which statements are true. Choose ALL that apply!

• Group 2 is 20 times larger than Group 1

• Group 2 is 400 times smaller than Group 4.

• Group 4 is 20 times larger than Group 3.

• Group 3 is 500 times smaller than Group 2.

• Group 1 is 80 times larger than Group 4.

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

• 1 x 10^-8

• 1 x 10^-4

• 1 x 10⁴

• 1 x 10⁸

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

Multiply:
(9.4 x 10⁶)(3.2 x 10⁵)

• 30.08 x 10¹¹

• 3.8 x 10¹

• 3.008 x 10¹²

• 2.9375 x 10¹

A factory can make 3 × 10⁴ t-shirts per day, how many t-shirts will it make in 2.5 ×10² days?

• 7.5 × 10⁶ t-shirts

• 7.5 × 10⁴ t-shirts

• 75 × 10⁵ t-shirts

• none of these

Rhode Island is the smallest state in the United States.  Its land area is about 2.9 x 10¹⁰ square feet.  Alaska, the largest state, is about 5.5 x 10² times as large as Rhode Island.  What is the land area of Alaska in square feet?

• Add

• Subtract

• Multiply

• Divide

There are a total of 463,100 books in a library. What is the value of the exponent when this number is written in scientific notation? ​ (a)  

• 5

• 6

• 2

• 3

• 4

• -2

• -3

• -4

• -5

• -6

The distance from the earth to the sun is 92,692,000 miles. What is the value of the exponent when this number is written in scientific notation? ​ (a)  

• 7

• 6

• 8

• 3

• 4

• -7

• -4

• -3

• -6

• -8