Scientific Notation and Powers of Ten (7.1bc/7.1a)

The diameter of a red blood cell is 0.0003 inches. Which expression represents this number written in scientific notation?

• -3 x 10⁴
• -3 x 10^-4
• 3 x 10⁴
• 3 x 10^-4

Tags

CCSS.8.EE.A.3

Select all of the numbers that are greater than 20%.

• 1/10
• 0.115
• 0.02
• 88%

Select all of the numbers that are greater than 20%.

• 15%
• 0.6
• 3/20
• 4/5

The table gives the approximate populations of four cities in New York in scientific notation. Based on their populations, which list lists the cities in descending order?

• Binghamton, Albany, Rochester, Syracuse
• Albany, Rochester, Syracuse, Binghamton
• Binghamton, Syracuse, Rochester, Albany
• Syracuse, Albany, Rochester, Binghamton

Tags

CCSS.8.EE.A.3

Which number would be between 0.6 and 72% on a number line?

• ¾
• 6.5
• 7.1 x 10²
• 63.4%

Which list arranges the numbers in ascending order?

• 46.93, 4.6 x 10², 46.3%, 46⅕
•  4.6 x 10², 46.93, 46⅕, 46.3%
• 46.3%, 46⅕, 46.93, 4.6 x 10²
• 46⅕, 46.93, 46.3%, 4.6 x 10²

Which of the following shows the numbers listed from greatest to least?

• -⅓, -0.3, 6.5%, 0.11
• 0.11, 6.5%, -⅓, -0.3
• 6.5%,0.11, -⅓, -0.3
• 0.11, 6.5%, -0.3, -⅓

Select all answers that are equivalent to 10 ^-4

• -1/10 * -1/10  * -1/10 * -1/10
• 1/10,000
• 1/10 * 1/10 * 1/10 * 1/10 

Select all answers that are equivalent to 10 ^-4

• -0.0001
• (-10) * (-10) * (-10) * (-10)
• 0.0001

Based on the pattern,
    10¹ = 10
    10⁰= 1
    10^-1= 0.1
    10^-2= 0.01
0.0000001 is equivalent to - 

• 10^-7
• 10^-5
• 10^-6
• 10^-4