Estimating Quantities in Scientific Notation

Express the following in scientific notation:
.000457

• 457 x 10⁶

• 457 x 10^-6

• 4.57 x10⁴

• 4.57 x 10^-4

Convert to Scientific Notation: 1,23,000,000,000,000

The diameter of a grain of sand is .0024 inch. What is this using scientific notation?

• 2.4 x 10⁻³

• 24 x 10⁻²

• 0.024

• 0.0024

4.3x10⁵

• 4300000

• .000043

• 430000

• .0000043

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

• 0.000035

• 0.00035

• 0.0000035

• 0.0035

Is this number very Large or very Small?

• Large

• Small

Express the following in standard notation:
8.025 x 10^-8

• .000 000 080 25

• .000 000 008 025

• 802,500,000,000

• 80,250,000,000

What is 7.36 x 10 ^-4 in standard form?

• 73600

• 0.0000736

• 0007.36

• 0.000736

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

Convert to Scientific Notation: .0000000004