Scientific Notation

Write in scientific notation: 
0.0000378 

• 3.78 x 10^-5

• 3.78 x 10^-6

• 0.378 x 10^-5

Which is the smallest?
1.3 x 10²⁰
2.9 x 10²¹
9.5 x 10³²
8.4 x 10¹⁹

• 1.3 x 10²⁰

• 2.9 x 10²¹

• 9.5 x 10³²

• 8.4 x 10¹⁹

Tags

CCSS.8.EE.A.3

Tags

CCSS.8.EE.A.3

The contents of a cell in a spreadsheet are shown below. What number does the contents of the cell represent?

• It represents 0.0000010304283

• It represents 0.000010304283

• It represents 103,042.83

• It represents 10,304.283

Tags

CCSS.5.NBT.A.3A

Which shows the expression below simplified? (5x10^-5) x 0.00008

• 4 x 10^-10

• 4 x 10^-9

• 4 x 10²⁵

• 1.3 x 10²⁵

Tags

CCSS.8.EE.A.4

Which of the following would be a reasonable estimate for the weight of a pencil?

• 1x10^-20 lb

• 1x10² lb

• 1x10²⁰ lb

• 1x10^-2 lb

Tags

CCSS.8.EE.A.3

The contents of a cell in a spreadsheet are shown below.

8.6974E6

What number does the contents of the cell represent?

• 0.0000086974

• 8,697,400

• 0.00000086974

• 86,974,000,000

Tags

CCSS.8.EE.A.3

The government of a foreign country has recently decided to give a tax rebate to each of its adult citizens. The total amount the government can spend on the program is the equivalent of $3.66 x 10¹¹. If the adult population of the country is approximately 2.65 x 10⁸, what is a good estimate of the amount of money each person will receive (in dollars)?

• $1,381.13

• $13,811.32

• $969.90

• $138.11

Tags

CCSS.8.EE.A.3

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

Tags

CCSS.8.EE.A.4

When multiplying numbers in scientific notation, what do you do with the exponents?

• Multiply them

• Add them

• Keep them the same

• Make them equal

Tags

CCSS.8.EE.A.4