Wayground #16

Multiple Choice

What is the main purpose of using scientific notation?

• To write very large or very small numbers using powers of 10

• To make numbers look more complicated

• To avoid using decimals

• To confuse readers

Multiple Choice

Which of the following is an example of a number written in scientific notation?

• 5.97 x 10^24

• 5970000000000000000000000

• 0.000002

• 24293.1 x 10^5

Multiple Choice

What are the correct steps for multiplying numbers in scientific notation?

• Multiply the exponents, add the exponents adjust to scientific notation if needed.

• Divide the exponents, add the coefficients, adjust to scientific notation if needed.

• Add the coefficients, subtract the exponents, adjust to scientific notation if needed.

Multiple Choice

What is the simplified version of

• 3.9 x 10²⁰

• 4 x 10²⁰
• 3.9 x 10⁶

• 3.9 x 10²⁰

Match

Match the following standard form with their scientific notation.

• 820

• 8200

• 82

• 820000

• $$8.2\times10^2$$

• $$8.2\times10^3$$

• $$8.2\times10^1$$

• $$8.2\times10^5$$

Multiple Choice

What must you do before adding or subtracting numbers in scientific notation? (Think of the 1st rule!)

• Make sure the exponents match.

• Multiply the coefficients.

• Divide the coefficients.

• Adjust the answer to scientific notation.

Multiple Choice

Which of the following is the correct interpretation of the calculator display '7.5E-4'?

(Look at the 2nd example on the previous slide!)

• 7.5 × 10⁻⁴

• 7.5 × 10⁴

• 0.75 × 10⁻⁴

• 7.5 × 10⁻³

Multiple Choice

$$10^?=10,000,000$$  Which number replaces the ? to make a true statement?

• 6

• 7

• -6

• -7

Multiple Choice

Which of the following is equivalent to $$10^4$$  ?

• 40

• 1,000,000

• 10,000

• 0.0001