operations with scientifc notations

The mass of a substance is 8 X 10⁹ micrograms. If one microgram is equal to 1 X 10^-6 grams, what is its mass in grams?

• 1.25 X 10^-15 grams

• 1.25 X 10^-3 grams

• 8 X 10³ grams

• 8 X 10¹⁵ grams

Tags

CCSS.6.EE.A.1

A rectangular section of land made up of wheat farms has a length of 5 X 10⁴ meters and a width of 6 X 10³ meters What is the area of the land in square meters?

• 3 X 10⁶ m²

• 3 X 10⁷ m²

• 3 X 10⁸ m²

• 3 X 10¹² m²

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CCSS.6.EE.A.1

CCSS.6.G.A.1

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.

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CCSS.6.EE.A.1

CCSS.6.RP.A.1

CCSS.6.RP.A.3

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

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.2

CCSS.6.NS.B.3

Divide:
(6.9 x 10⁷) / (2.3 x 10^-3)

• 3 x 10¹⁰
• 3 x 10⁴
• 3 x 10^-4
• 3 x 10^-11

Tags

CCSS.8.EE.A.4

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

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.3

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

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.3

CCSS.6.NS.B.3

(2 x 10^-5)+ (7 x 10^-5)

• 9 x 10^-10
• 14 x 10^-5
• 9 x 10^-5
• 1.4 x 10^-4

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CCSS.6.EE.A.1

CCSS.6.EE.A.3

CCSS.6.EE.A.4

(8 x 10⁴) + (4 x 10⁴)

• 12 x 10⁴
• 1.2 x 10⁵
• 1.2 x 10⁹
• 1.2 x 10⁸

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.3

CCSS.6.EE.A.4

(2 x 10⁹)(4 x 10^-4)

• 8 x 10¹³
• 8 x 10³⁶
• 8 x 10⁵
• 8 x 10^-36

Tags

CCSS.8.EE.A.4