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## Directions

Table salt is a compound of the two chemical elements sodium and chlorine. If you want to keep track of the amount of sodium you eat every day, you’ll need a way to measure it. Sodium in food is measured in **milligrams (mg)**, a metric unit that measures *mass*.

“Milli” means “one thousandth,” or 1/1,000, so *milligram* means 1/1,000 of a *gram*. A **gram (g)** is about the weight of a small paper clip. If you broke that paperclip into 1,000 pieces, each piece would weigh 1 mg. In math terms this means:

1 mg = 1/1,000 gram *(1 mg is 1/1,000 of a gram.)*

Which is the same thing as:

1,000 mg = 1 g *(There are 1,000 mg in 1 gram.)*

To convert **grams to milligrams**: *multiply* the number of *grams* by 1000.

To convert **milligrams to grams**: *divide* the number of *milligrams* by 1000.

Drag and drop each measurement in the order from **least to greatest**. Hint: Use a piece of paper and convert all measurements to one unit—either grams or milligrams—before putting them in order from least to greatest.