Computing with Scientific Notations

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

Multiply:
(3.4 x 10⁵)(1.2 x 10^-3)

• 4.08 x 10³

• 4.8 x 10²

• 4.08 x 10²

• 4.08 x 10¹

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.8.EE.A.4

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

The table below shows the debt of the three most populous states and the three least populous states. What is the sum of the debts for the three most populous states? Express your answer in scientific notation.

• 892 x 10^6

• 1.02 x 10^12

• 892 x 10^3

• 1.02 x 10^7

Tags

CCSS.8.EE.A.4

The table below shows the debt of the three most populous states and the three least populous states. Part A.) What is the sum of the debts for the three most populous states? Express your answer in scientific notation.

• 1.892 x 10^6

• 1.02 x 10^12

• 1.892 x 10^3

• 1.02 x 10^7

Tags

CCSS.8.EE.A.4

Which is the largest?
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 

Tags

CCSS.8.EE.A.3

(7.32 x 10⁶) - (4.01 x 10⁸)

• -3.937 x 10⁸

• -3.94 x 10⁸

• 3.937 x 10⁷

• 3.937 x ⁻²

Tags

CCSS.8.EE.A.4

(2 x 10⁴) - (1.9 x 10²)

• 1.81 x 10⁵

• 1.81 x 10³

• 2 x 10⁴

• 1.81 x 10⁴

Tags

CCSS.8.EE.A.4

Which of the following is correct scientific notation?

• 20.35 x 10⁴

• .2035 x 10⁴

• 2035 ⁴

• 2.035 x10⁴

Tags

CCSS.8.EE.A.3