SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0.654 x 103
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6.54 x 10-4
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6.54 x 104
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0.654 x 10-3
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Detailed explanation-1: -Replace the numerator by placing the decimal after 4 digits in 6.5. As there is only 1 digit before the decimal. So, put 3 zero after the decimal and before 6. Hence, the standard notation is 0.00065.
Detailed explanation-2: -The number 6.5x10-5 could be converted to the fraction 6.5/100000. This could be converted to 65/1000000 by multiplying the numerator and denominator of the fraction by 10.
Detailed explanation-3: -The number 6.5x10-7 written in decimal format would be 0.00000065 because the decimal point was moved 7 places to the left to form the decimal 0.00000065.
Detailed explanation-4: -A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650, 000, 000 can be written in scientific notation as 6.5 ✕ 10^8. Created by Sal Khan and CK-12 Foundation.