Multiplying and Dividing Scientific Notation

What is the value of x in this equation?
(2.4×10³) × (3×10^x) = 7.2×10⁹

• 5
• 6
• 7
• 8

Tags

CCSS.8.EE.A.4

(6×10³) ÷ (3×10²)

• 18×10⁶
• 2×10⁵
• 2×10⁶
• 2×10¹

Tags

CCSS.8.EE.A.4

What is the value of n in the equation?
1.8×10ⁿ = (6×10⁸)×(3×10⁶)

• 12
• 13
• 14
• 15

Tags

CCSS.8.EE.A.4

(3.8×10⁷)×162

• 6.156×10⁹
• 6.156×10⁸
• 615×10⁷
• 615×10⁸

Tags

CCSS.8.EE.A.4

10.5×10^-5 ÷ 2.5×10^-2

• 4.2×10³
• 4.2×10^-3
• 4.2×10^-7
• 4.2×10^-10

Tags

CCSS.8.EE.A.4

(9.6×10^-8)÷(2×10^-15)

• -4.8×10⁷
• 4.8×10⁷
• 4.8×10^-7
• -4.8×10^-7

Tags

CCSS.8.EE.A.4

The average U.S. resident uses 100 gallons of water per day.  The population of the U.S. is about 3.23×10⁸.  About how many gallons of water do U.S. residents use each day?

• 323×10¹⁰
• 3.23×10¹⁰
• 3.23×10⁹
• 3.23×10⁸

Tags

CCSS.8.EE.A.3

The average U.S. resident uses 100 gallons of water per day.  The population of the U.S. is about 3.23×10⁸.  About how many gallons of water do U.S. residents use each day?

• 323×10¹⁰
• 3.23×10¹⁰
• 3.23×10⁹
• 3.23×10⁸

Tags

CCSS.8.EE.A.4

As of November 12th 2015, the U.S. Treasury estimates the national debt at 1.8604 x 10¹³ dollars.  The population of the United States is approximately 3.189 x 10⁸ people.  Using these values, calculate the per person share of the national debt. 

• .58338037 × 10⁵
• 5.8338037 × 10⁴
• 1.714147495 × 10⁵
• 1.714147495 × 10^-5

Tags

CCSS.8.EE.A.4

(9.6×10³) × (6.7×10²)

• 64.32×10⁵
• 6.432×10⁶
• 64.32×10⁶
• 64.32×10⁵

Tags

CCSS.8.EE.A.4