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Question How tall are you?

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Presentation on theme: "Question How tall are you?"— Presentation transcript:

1 Question How tall are you?
I have half a gallon, how many pints is that? How much do you weigh in ounces?

2 Standard System Length: inch, foot, yard, etc.
Weight: ounces, pounds, etc. Volume: cups, pints, quarts, gallons, etc. These can often be difficult to convert from a smaller unit to a larger unit of measurement.

3 Metric System Basics

4 Metric System Standardized system of measurement developed by the French and adopted in the 17th-18th century. Most countries utilize this system of measurement. We use this system in science to make it easier to communicate results and describe experiments to other countries.

5 Metric System Meter: take distance from the equator and begin dividing it by 10 Liter =  volume of a cube with each side 10 cm Gram = mass of 1 cubic cm of water

6 Metric System The metric system is based on a base unit that corresponds to a certain kind of measurement Length = meter Volume = liter Mass = gram Prefixes plus base units make up the metric system Example: Centi + meter = Centimeter Kilo + liter = Kiloliter

7 Metric System So, why do we have the prefixes?
It makes communicating the measurements easier. Ex: using feet to measure humans instead of inches.

8 Metric System These prefixes are based on powers of 10. What does this mean? From each prefix every “step” is either: 10 times larger or 10 times smaller For example Centimeters are 10 times larger than millimeters 1 centimeter = 10 millimeters kilo hecto deca Base Units meter gram liter deci centi milli

9 Metric System How can we remember all of the prefixes? meter liter
kilo hecto deca meter liter gram deci centi milli

10 Metric System How can we remember all of the prefixes? Kids Have
Dropped Bass Doing Complicated Metrics kilo hecto deca Base Units meter gram liter deci centi milli

11 Metric System For each “step” to right, you are multiplying by 10
For example, let’s go from a base unit to centi 1 liter = 10 deciliters = 100 centiliters 2 grams = 20 decigrams = 200 centigrams ( 1 x 10 = 10) = (10 x 10 = 100) (2 x 10 = 20) = (20 x 10 = 200) kilo hecto deca meter liter gram deci centi milli

12 Review 32 cm to m .125 kl to l 1.35 dag to mg 12 mg to dg .2 hl to dl

13 Your Turn

14 Metric System An easy way to move within the metric system is by moving the decimal point one place for each “step” desired Example: change meters to centimeters 1 meter = 10 decimeters = 100 centimeters or 1.00 meter = 10.0 decimeters = 100. centimeters kilo hecto deca meter liter gram deci centi milli

15 Metric System Now let’s try our previous example from meters to kilometers: 16093 meters = decameters = hectometers = kilometers So for every “step” from the base unit to kilo, we moved the decimal 1 place to the left (the same direction as in the diagram below) kilo hecto deca meter liter gram deci centi milli

16 Metric System If you move to the left in the diagram, move the decimal to the left If you move to the right in the diagram, move the decimal to the right kilo hecto deca meter liter gram deci centi milli

17 Metric System Now let’s start from centimeters and convert to kilometers centimeters = 4 kilometers centimeters = kilometers kilo hecto deca meter liter gram deci centi milli

18 Metric System Now let’s start from meters and convert to kilometers
4000 meters = 4 kilometers kilo hecto deca meter liter gram deci centi milli Now let’s start from centimeters and convert to meters 4000 centimeters = 40 meters kilo hecto deca meter liter gram deci centi milli

19 Metric System Now let’s start from meters and convert to centimeters
5 meters = 500 centimeters kilo hecto deca meter liter gram deci centi milli Now let’s start from kilometers and convert to meters .3 kilometers = 300 meters kilo hecto deca meter liter gram deci centi milli

20 Metric System Now let’s start from kilometers and convert to millimeters 4 kilometers = millimeters or 4 kilometers = 40 hectometers = 400 decameters = 4000 meters = decimeters = centimeters = millimeters kilo hecto deca meter liter gram deci centi milli

21 Metric System Summary Base units in the metric system are meter, liter, gram Metric system is based on powers of 10 For conversions within the metric system, each “step” is 1 decimal place to the right or left Using the diagram below, converting to the right, moves the decimal to the right and vice versa kilo hecto deca meter liter gram deci centi milli

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