Q. How do you write 1,490 in scientific notation?_____×10_____
Identify Digit and Decimal Point: Identify the most significant digit in 1,490 and the decimal point's original position.The most significant digit is 1, and the original decimal point is after the last digit, which is after the 0 in 1,490.
Move Decimal Point Right: Move the decimal point to the right of the most significant digit. Moving the decimal point after the 1, we get 1.490.
Count Decimal Point Moves: Count the number of places the decimal point has moved. The decimal point has moved 3 places to the left to get from 1,490 to 1.490.
Write Number in Form: Write the number in the form of a single digit followed by the decimal fraction.The number is now written as 1.490.
Multiply by Power of 10: Multiply this number by 10 raised to the power of the number of places the decimal point moved.Since the decimal point moved 3 places, we multiply 1.490 by 103.
Write in Scientific Notation: Write the final expression in scientific notation.The scientific notation of 1,490 is 1.490×103.