Question

Which is which

Answer 1

Answer and Explanation:

To find : Which number is in standard notation or scientific notation?

Solution :

Scientific notation is a special ways of writing the standard form of number.

Scientific notation make a big number into smaller way bye writing it into 10 to the power or using E.

Standard notation is like 12,47950585,89000.

Scientific notation is like $1.43\times 10^3$ , $1.43E10$

So, Now we examine the numbers,

A) $5.9E10$ is the Scientific notation.

B) $0.0000734$ is the Standard notation.

C) $2.66\times 10^{-3}$ is the Scientific notation.

D) $641,000,000,000$ is the Standard notation.

Answer 2

C. 2.66 × 10^-3

because scientific notation has to be a number less than 10 times 10 to the x power.

So since 2.66 is less than 10 and it is being multiplied by 10^-3, it is in scientific notation.

10^-3 means you moved the decimal point over to the right 3 times.

2.66 × 10^-3 = 0.00266