# Math

75 mg of salt is equivalent to how many grams of salt?

They got 0.075. How did they arrive at that answer?

A milogram (mg) is 1/1000 of a gram. In other words, each gram contains 1000 milograms.

To convert from mg to grams, divide the mg by 1000. In this problem, you move the decimal point three places to the left to multiply by 1000.

Sorry. I don't understand. You are going to have to break it down for me or is there a website you can direct me to to better help me out?

Please hold on a few minutes while I think of a better way of explaining it.

I didn't find a good website, even after I spelled milligram correctly.

Grams and milligrams are units of weight. For example, a granola bar weighs about 20 grams. Since there are 1,000 mg in a gram, each bar weighs about 20,000 mg -- and each mg is about the size of a tiny crumb that you probably couldn't even see.

To get back to your problem -- of 75 mg. Obviously that's a very small amount and is usually only used in scientific measurements. If you divide 75 by 1000 on a calculator, you'll get .075. (If this were money, .075 would be 7 1/2 cents compared with \$1.00.)

A faster way of dividing by 1000 is to move the decimal point three places to the right.

75 mg = .075 g.

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