Estimate Quantities in Scientific Notation

A researcher measured approximately 0.005123 grams of bacteria in a sample. How is this number expressed in scientific notation?

• 5.123 × 10³ grams

• 5123 × 10^–6 grams

• 0.5123 × 10^–2 grams

• 5.123 × 10^–3 grams

Tags

CCSS.8.EE.A.3

Estimate the number as a single digit a power of ten

• 4 x 10^-6

• 3 x 10^-6

• 9 x 10^-9

• 4 x 10^-5

Tags

CCSS.8.EE.A.3

The thickness of a penny is about 6.1 x 10^-2 inches. Which of the following is equivalent to this measure?

• 0.0061 inches 

• 0.061 inches

• 0.61 inches

• 610 inches

Tags

CCSS.8.EE.A.3

The population of Kansas is 2,853,118 people. Which of the following is an estimation in scientific notation for the population?

• 2 imes10^{-6} people

• 3 imes10^6 people

• 2,800,000 people

• 3,000,000 people

Tags

CCSS.8.EE.A.3

A person weighing 150 pounds will have, on average, 0.000021 pounds of gold in his body. How is this amount of gold expressed in scientific notation?

Tags

CCSS.8.EE.A.3

Express the following number in usual form:
3.5 x 10^-5

• 0.000035

• 0.00035

• 0.0000035

• 0.0035

Tags

CCSS.8.EE.A.3

Convert to Scientific Notation: .0000000004

Write 9.8 x 10^-5 in standard form

• 0.00098

• 0.000098

• .098

• 98,000

Tags

CCSS.8.EE.A.3

Write 0.0000190 seconds in scientific notation

• 1.90 x10^-5 seconds

• 0.190 x 10^-5 seconds

• 19.0 x 10^-6 seconds

• 190 x 10^-7 seconds

Express the following quantities in scientific notation:  5800 m

• 5.8 x 10³ m

• 58.00 x 10³ m

• 5800 x 10¹ m

• 5.8 x 10⁴ m

Tags

CCSS.8.EE.A.3