Scientific Notation

Question 1

Subtract and express the answer in scientific notation: (3.87×105)−(2.87×105)= _____.

Answer 1

1.00×105

Question 2

For what types of numbers is scientific notation especially useful? I. very large numbers II. very small numbers

Answer 2

and ||

Question 3

____ notation allows us to express very large or very small numbers using exponents, which saves time and makes it easier to compare numbers of very different magnitude.

Answer 3

Scientific

Question 4

Choose the answer that shows the following number correctly written in scientific notation.

430,000

Answer 4

4.3 x 105

Question 5

Scientific notation is a way of writing very large or very small numbers using _____ to make them easier to work with.

Answer 5

exponents

Question 6

Calculate: (7.0×105)+(2.5×104)= _____.

Answer 6

7.25 x 10^5

Question 7

Solve: (6.825×10−3)×(1.2×10−8)

Answer 7

8.2 x 10^-11

Question 8

Perform this calculation using scientific notation: (0.003999×108)+(6.00111×108)= _____.

Answer 8

6.00511×10^8

Question 9

A dog has a mass of 19 kg. What is the mass of the dog in grams, expressed in scientific notation?

Answer 9

1.9 x 10^4 g

Question 10

Choose the correct representation of this number written in scientific notation.

0.0000535

Answer 10

5.35 x 10^-5

Question 11

When converting a number to scientific notation, moving the decimal to the left makes the exponent _____ ; while moving the decimal to the right makes the exponent _____.

Answer 11

positive, negative

Question 12

To write a number in proper scientific notation, the coefficient should be greater than or equal to 1, but less than 10.

Answer 12

true

Question 13

Scientific notation is a convenient and accurate way to represent very large and very small numbers.

Answer 13

true