Scientific Notation and Significant Figures Practice

What is scientific notation used for?

• To make numbers larger

• To make numbers smaller

• To make very large or very small numbers more compact and easier to write

• To convert numbers into fractions

How can the number 300,000,000 be expressed in scientific notation?

• 3 x 10^6

• 3 x 10^8

• 3 x 10^9

• 3 x 10^7

What is the requirement for a number to be in scientific notation?

• It must be a whole number.

• It must be written as the product of a number between 1 and 9.99999 and the appropriate power of 10.

• It must be a fraction.

• It must be a negative number.

What should you do to convert a number to scientific notation?

• Add zeros to the end of the number.

• Count how many times you have to move the decimal point to get a number between 1 and less than 10.

• Multiply the number by 100.

• Divide the number by 10.

What happens to the exponent if the number is getting smaller in scientific notation?

• The exponent gets smaller.

• The exponent stays the same.

• The exponent gets bigger.

• The exponent becomes zero.

What is the scientific notation for the number 238,000?

• 2.38 x 10^4

• 2.38 x 10^5

• 2.38 x 10^6

• 2.38 x 10^3

Convert the number 1,500,000 into scientific notation.

• 1.5 x 10^5

• 1.5 x 10^6

• 1.5 x 10^7

• 1.5 x 10^4

What is the scientific notation for 0.00043?

• 4.3 x 10^-3

• 4.3 x 10^-4

• 4.3 x 10^-5

• 4.3 x 10^-2

Express 0.135 in scientific notation.

• 1.35 x 10^-2

• 1.35 x 10^-1

• 1.35 x 10^0

• 1.35 x 10^-3

Convert 357 into scientific notation.

• 3.57 x 10^1

• 3.57 x 10^2

• 3.57 x 10^3

• 3.57 x 10^0