Math 8 Intro To Scientific Notation

Introduction to Scientific Notation

Math 8

Please make sure you read assignment directions!

Reminders

Notation and Rules

Multiple Choice

How would you write 5 * 5 * 5 * 5

• $5^4$

• $5\ \cdot5\$

• $5^1$

• $25\ \cdot\ 5$

Solving the problem: How do we handle big numbers?

• How could we write 860?

• How could we write 8600?

• How could we write 86000?

• How could we write 860000?

The Rules

• Writing Numbers in Standard Form. The absolute value of the exponent indicates how many places to move the decimal point.

• If the exponent is negative, move the decimal point to the left.

• If the exponent is positive, move the decimal point to the right.

Multiple Choice

Convert to scientific notation:

520,000,000

• 52 x 10⁷

• 5.2 x 10⁷

• 5.2 x 10⁸

• 0.52 x 10⁹

Multiple Choice

How would you write 0.0005 in scientific notation?

• 50 x 10^-5

• 5 x 10^-4

• 5 x 10³

• .5 x 10³

Poll

How would you rate your understanding of this lesson?

• Completely understood it (4)

• Got most of it (3)

• Had some difficulty (2)

• Struggled (1)