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# Convert Metric Units of Mass ## What is Mass?

Mass is used to measure the weight of an object.

For example, you are measuring the mass of your body when you step on to a scale.

Metric Unit of Mass: In the metric system of measurement, the most common units of mass are the gram and kilogram.

Note: All of the other metric units of mass are defined in terms of the gram.

### Let’s understand the metric units of mass, what they are in actuality.

#### Kilogram

The abbreviation for kilogram is ‘Kg.’

1 kilogram is equal to 1000 grams

1 kilogram mass is the same as a Cuban Solenodon, a pineapple. (Approx.)

#### Gram

The measurement of a gram is one of the most widely used measurements.

The abbreviation for gram is ‘’g.”

1 gram quantity is the same as the weight of a paper clip or the weight of a dollar note.

#### Milligram

A milligram is a very small unit of measurement in the metric system,

It also requires very precise scales to weigh out a milligram accurately.

The abbreviation for milligram is ‘’mg.”

1 milligram quantity is the same as a small feather or half the weight of a small mosquito.

### Conversion between the metric units of capacity

To convert from one unit of mass to another unit, we need to multiply or divide.

Examples:

1. Convert 8 kg into gram and milligram.

Solution: 8 kg = 8 × 1000 g = 8000 g

= 8 kg = 8 × 1000 × 1000 mg  = 8,000,000 mg

2. Convert 35 g into kilograms.

Solution: 35 g = 35/1000 kg

= 0.035 kg

3.  Convert 310 mg into grams.

Solution: 310 mg = 310/1000 g

= 0.31 g

4. Convert 12 kg 3 g into kilograms.

Solution: 12 kg 3 g = 12 kg + 3/1000 g

= 12 kg + 0.003 g

= 12.003 kg

Example: Which has the greater mass: 7 kilograms or 6,123,000 milligrams? Explain how you made your comparison.

Solution: 7 kg = 7 × 1000 g

= 7000 g = 7000 × 1000 mg

= 7,000,000 mg

Now it is obvious that 7 kg is greater mass.

Example: There are two boxes of cereal in the kitchen. One contains 350 g of cereal, and the other one contains 2.67 kg of cereal. How much cereal (measured in kg) is there in total?

Solution: 350 g = 0.35 kg

= 2.67 + 0.35 = 3.02

There are 3.02 kg of cereal in total.

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