For example, a truck weights 6, pounds. How many tons is this? To convert pounds to tons, you can divide 6 , by 2 , Names of standardized tests are owned by the trademark holders and are not affiliated with Varsity Tutors LLC. Media outlet trademarks are owned by the respective media outlets and are not affiliated with Varsity Tutors. Varsity Tutors connects learners with experts. Instructors are independent contractors who tailor their services to each client, using their own style, methods and materials.
Weight and Mass Weight is the measure of how heavy an object is. You still have mass, though, Metric Units The gram and kilogram are two units used to measure mass in the metric system. From the gram, we get the rest of the metric units using the standard metric prefixes. Milligram mg 0. In the United States, both the U. In most other countries, the metric system is the primary system of measurement. If you travel to other countries, you will see that road signs list distances in kilometers and milk is sold in liters.
These measurement units are part of the metric system. Unlike the U. For example, a liter is 10 times larger than a deciliter, and a centigram is 10 times larger than a milligram. So, what if you have to find out how many milligrams are in a decigram? Or, what if you want to convert meters to kilometers? Understanding how the metric system works is a good start. What is Metric? The metric system uses units such as meter , liter , and gram to measure length, liquid volume, and mass, just as the U.
In addition to the difference in the basic units, the metric system is based on 10s, and different measures for length include kilometer, meter, decimeter, centimeter, and millimeter. The metric system also applies the idea that units within the system get larger or smaller by a power of This means that a meter is times larger than a centimeter, and a kilogram is 1, times heavier than a gram.
You will explore this idea a bit later. Length, Mass, and Volume. The table below shows the basic units of the metric system. Note that the names of all metric units follow from these three basic units. In the metric system, the basic unit of length is the meter. A meter is slightly larger than a yardstick, or just over three feet.
The basic metric unit of mass is the gram. A regular-sized paperclip has a mass of about 1 gram. Among scientists, one gram is defined as the mass of water that would fill a 1-centimeter cube.
Weight is a measure of the pull of gravity on an object. Finally, the basic metric unit of volume is the liter. A liter is slightly larger than a quart.
The handle of a shovel is about 1 meter. A paperclip weighs about 1 gram. A medium-sized container of milk is about 1 liter. Though it is rarely necessary to convert between the customary and metric systems, sometimes it helps to have a mental image of how large or small some units are. The table below shows the relationship between some common units in both systems. Common Measurements in Customary and Metric Systems.
Prefixes in the Metric System. The metric system is a base 10 system. Although the weight of babies vary, the average birth weight of 3. To calculate your BMI, use the following formula: mass divided by height squared. This is a healthy BMI, as is any figure between 20 and Below 20 means you are underweight, e. A more extreme case might be such as a man weighing 55 kg but he is 1. At the other end of the scale, a BMI of 25 to 30 is overweight, and over 30 is obese.
And as height decreases, and weight increases, then the BMI will increase. The chart below can also be used to calculate your BMI, if you know your height centimetres and weight kilograms , then use a straightedge to help locate the point on the chart where your height and weight intersect.
Read the number on the dashed line closest to this point. For example, an individual who weighs 69 kg and is cm tall has a BMI of approximately For other purposes, we can use kilograms in our everyday lives, such as when shopping, and buying food, either pre-packed with a printed weight, such as 1 kg, 2.
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