If a dial marked in megahertz shows a reading of 3.525 MHz, what would it show if it were marked in kilohertz?

The prefix 'mega' (M) stands for one million, while the prefix 'kilo' (k) stands for one thousand. Because a million is one thousand times larger than a thousand, one megahertz (MHz) is equal to one thousand kilohertz (kHz). To convert a frequency from megahertz to kilohertz, you must multiply the value by 1,000. Mathematically, this involves moving the decimal point three places to the right. Multiplying 3.525 MHz by 1,000 gives 3 525 kHz. The other options are incorrect because they result from moving the decimal point by the wrong number of spaces.