Scientific Notation and Significant Figures

True or false: When writing a number in scientific notation, the first number must be greater than 1, but less than 10.

• False

• True

What is 7.89 x 10^-8 written in regular notation?

• 0.0000000789

• 0.789

• 0.00000789

• 0.000000000789

What is 23400 in scientific notation?

• 2.34 x 10⁴

• 2.3 x 10³

• 2.30 x 10⁵

• 2.34 x 10³

Which of the following numbers is written in correct scientific notation?

• 20.35 x 10⁴

• .2035 x 10⁴

• 2035 ⁴

• 2.035 x10⁴

What is the correct scientific notation for the number 0.000044?

• 4.4 x 10⁵

• 44 x 10⁴

• 44 x 10^-4

• 4.4 x 10^-5

What is 1.26 x 10³ in regular notation?

• 1260

• 126

• 126.0

• 12.6

What is 67,400,000 in scientific notation?

• 6.74 x 10⁷

• 67.4 x 10⁶

• 6.74 x 10^-7

• 674 x 10⁵

What is 0.000044 written in scientific notation?

• 4.4 x 10⁵

• 44 x 10⁴

• 44 x 10^-4

• 4.4 x 10^-5

How many significant figures does the measurement 0.998005 cm have?

• 9

• 10

• 6

• 5

How many significant figures does the measurement 1.90 L have?

• 3

• 4

• 6

• 8