7th Operations with Scientific Notation

(2.8 * 10⁸) (2.2*10³)

• 6.16 * 10²⁴
• 5.0 * 10¹¹
• 6.16 * 10¹¹
• 61.6 * 10¹¹

(9.6 * 10⁴)(6.5 * 10²)

• 6.24 * 10⁷
• 62.4 * 10⁶
• 6.24 * 10⁸
• 6.24 * 10²

(2.13 * 10⁴) / (7.1 * 10²)

• 0.3 * 10²
• 3 * 10⁶
• 3 * 10²
• 3 * 10

Neptune is approximately 5 X 10⁴ kilometers in diameter. Mars is approximately 7 X 10³ kilometers in diameter. What is an accurate comparison of the diameters of these two planets?

• The diameter of Neptune is more than 7 times greater than that of Mars.

• The diameter of Mars is more than 7 times greater than that of Neptune.

• The diameter of Neptune is about 1.4 times greater than the diameter of Mars.

• The diameter of Mars is about 1.4 times greater than the diameter of Neptune.

A box contains 5 X 10³ paper clips. The mass of each paper clip is 8 X 10^-4 kilograms. What is the combined mass of the paper clips in the box?

• 4 kilograms

• 40 kilograms

• 4 X 10⁷ kilograms

• 4 X 10^-7 kilograms

Write the answer in scientific notation.

4.1 x 10⁵ + 5.5 x 10⁶ =

• 5.91 x 10⁶

• 9.6 x 10⁵

• 9.6 x 10¹¹

• 4.65 x 10⁵

Which is the largest number?

4.8 x 10^-6

1.3 x 10²⁰

3.1 x 10^-4

9.2 x 10^-5

9.5 x 10³²

5.9 x 10^-5

2.9 x 10²¹

8.4 x 10¹⁹

• 9.5 x 10³²

• 3.1 x 10^-4

• 8.4 x 10¹⁹

• 4.8 x 10^-6

Find the difference.

(3.8 x 10⁴) - (2 x 10³)

• 1.8 x 10⁴

• 1.8 x 10¹

• 3.6 x 10¹

• 3.6 x 10⁴

Write the answer in scientific notation.
4.1 x 10⁵ +   5.5 x 10⁶  =

• 5.91 x 10⁶
• 9.6 x 10⁵
• 9.6 x 10¹¹
• 4.65 x 10⁵

(7.2 x 10⁶)-(3.4x 10⁶)

• 3.8x10⁶
• 7.7x10⁶
• 3.7x 10⁶
• 3.9x10⁶