3) Multiplication and Division in Exponential Notation

7.5 × 10⁹

(1.5 × 10³)(5 × 10⁶)

6 × 10¹⁰

(1.5 × 10⁷)(4 × 10³)

4 × 10¹⁵

(2 × 10⁶)(2 × 10⁹)

4 × 10³

(2 × 10⁻⁶)(2 × 10⁹)

6.25 × 10³

(2.5 × 10⁵)(2.5 × 10⁻²) =

6 × 10⁸

(3 × 10⁵)(2 × 10³)

6 × 10²

(3 × 10⁵)(2 × 10⁻³)

9.92 × 10⁶

(3.1 × 10²)(3.2 × 10⁴)

8 × 10²

(4 × 10⁻⁷)(2 × 10⁹)

7.5 × 10³

(7.5 × 10)(1 × 10²)

2.4 x 10⁻¹

. A speck of dust in an electron microscope is 1.2 × 10² millimeters wide. The image is 5×10² times larger than the actual size. How many millimeters wide is the actual speck of dust?

1.2 x 10⁻⁶

Divide.

1.25 x 10³

Divide.

1.4 x 10⁻⁶

Divide.

1.5 x 10⁻²

Divide.

1.75 x 10⁸

Divide.

2 x 10³

Divide.

2 x 10¹³

Divide.

4 x 10⁶

Divide.

4.5 x 10⁹

Divide.

5 x 10⁴

Divide.

6 x 10¹⁰

Divide.

7 × 10⁵

During the school year, each student planted 2 × 10² trees as part of a community service project. If there are 3.5 × 10³ students in the school, how many trees did they plant in total?

5.0×10² seconds

The speed of light is 3×10⁸ meters per second . If the sun is 1.5×10¹¹ meters from earth, how many seconds does it take for sunlight to reach the earth? Write your answer in exponential notation.