Matemática básica

Question 1

What is scientific notation?

Answer 1

A method of expressing numbers as a product of a coefficient and a power of ten.

Question 2

True or False: In scientific notation, the coefficient must be between 1 and 10.

Answer 2

True.

Question 3

Convert the number 4500 into scientific notation.

Answer 3

4.5 x 10^3.

Question 4

What is the general form of a number in scientific notation?

Answer 4

a x 10^n, where 1 ≤ a < 10 and n is an integer.

Question 5

Which of the following is a valid scientific notation? A) 0.0056 B) 5.6 x 10^-3 C) 56 x 10^-2

Answer 5

B) 5.6 x 10^-3.

Question 6

Fill in the blank: The number 0.000789 can be written in scientific notation as _____ x 10^-3.

Answer 6

7.89.

Question 7

What is the purpose of using scientific notation?

Answer 7

To simplify the representation and calculation of very large or very small numbers.

Question 8

True or False: The exponent in scientific notation indicates how many times to multiply by ten.

Answer 8

True.

Question 9

How do you convert 7.2 x 10^4 to standard form?

Answer 9

72000.

Question 10

What is the scientific notation for the number 0.00001234?

Answer 10

1.234 x 10^-5.