Write the number 55,000,000 in scientific notation.
A) $55 \times 10 ^ { 7 }$
B) $55 \times 10 ^ { 8 }$
C) $5.5 \times 10 ^ { 6 }$
D) $55 \times 10 ^ { 6 }$
E) $5.5 \times 10 ^ { 7 }$

Question

Quizplus · Accepted Answer

Scientific notation represents a number as a coefficient multiplied by a power of 10. To convert 55,000,000 to scientific notation, we count the number of places we need to move the decimal point to get a number between 1 and 10. Since we need to move the decimal point 7 places to the left to get 5.5, the coefficient is 5.5, and the power of 10 is 7. Therefore, the scientific notation of 55,000,000 is 5.5 x 10^7. Choice E matches this result.

Write the Number 55,000,000 in Scientific Notation 55×10755 \times 10 ^ { 7 }55×107

Write the Number 55,000,000 in Scientific Notation $55 \times 10 ^ { 7 }$