Scientific Notation

In Australia, the people use approximately 2,240,000,000 pounds of bread in a year. How can we write this number in scientific notation?

• 2.240 x 10^-9

• 224 x 10⁶

• 2.2 x 10⁶

• 2.240 x 10⁹

The average width of a piece of human hair is .0001m. What is this measurement in scientific notation?

• x 10⁴

• x 10^-4

• 10 x 10^-5

• x 10^-3

Add.

(2 x 10³) + (5 x 10⁵)

• 7 x 10²

• 10 x 10¹⁵

• 5.02 x 10⁵

• 1.0 x 10²

Multiply:
(3.4 x 10⁵)(1.2 x 10^-3)

• 4.08 x 10^-8

• 4.8 x 10²

• 4.08 x 10²

• 4.08 x 10^-15

Write in scientific notation:
3,000,000

• 3 x 10⁶

• 3 x 10⁷

• .3 x 10⁷

• 3 x 10⁵

Write in scientific notation:
2,540

• .254 x 10⁴

• 2.54 x 10⁴

• 2.54 x 10³

• 2.54 x 10²

Solve:
(2.1×10​²​​) × (3.0×10​⁴)

• 5.1 x 10²

• 6.3 x 10⁶

• 5.1 x 10⁶

• 6.3 x 10⁸

Solve:
(9 x 10^-6) / (3 x 10^-3) 

• 27 x 10^-9

• 3 x 10^-3

• 3 x 10^-9

• 27 x 10^-3

Multiply:
(9.4 x 10⁶)(3.2 x 10⁵)

• 30.08 x 10¹¹

• 3.8 x 10¹

• 3.008 x 10¹²

• 2.9375 x 10¹

UNDERSTANDING:
The first number in scientific notation must be...

• between and including 0 and 10

• between and including 1 and 9.9999

• between and including 0 and 9.999

• between and including 1 and 10