metric system conversions 2010

1.What are some units we measure with in the United States?

2.Are our measuring systems easy or confusing? Explain

I. BackgroundA. The Metric System is a system of units

for measurement

B. Used by scientists around the world

C. Easy to use because it is based on units of ten (10)

Burma, Liberia, United States

II. How it works

A. The basic units:

1. Length=meter

2. Volume=liter

3. Mass=gram

B. Add prefixes for larger or smaller divisions

1. King Hector Doesn’t [usually] Drink Chocolate Milk!

King Hector Doesn’t[usually]

Drink Chocolate Milk

Kilo (k)

Hecto (h)

Deka (da)

Meter Liter Gram

Deci (d)

Centi (c)

Milli (m)

III. Conversions; Metric-Metric

A. How to do it:1. We are ONLY MOVING THE DECIMAL!!!!!2. Here’s how:

1. Look at the order of the prefixes2. Begin at the prefix that you start with3. Move to the prefix you want to end with4. Move the decimal in the number in the same

direction and the same number of times you moved on your graphic organizer

B. Example:1. Convert 1102 meters to

kilometers

Kilo (k)

Hecto (h)

Deka (da)

Meter Deci (d)

Centi (c)

Milli (m)

2. Move your decimal to the __________ 3. Move a total of _________ spaces4. 1102 meters = ____________________ kilometers

Left3

1.102

1102

Work with your partner to practice converting from

Metric to Metric units.

Use the problems provided by Mrs. Lock.

1.What is the metric system?

2.How is the metric system set up?

3.What is the metric unit for mass? volume? length?

***Convert 52 meters to millimeters

Kilo (k)

Hecto (h)

Deka (da)

Meter Deci (d)

Centi (c)

Milli (m)

Move your decimal to the __________ Move a total of _________ spaces 52 meters = ____________________ millimeters

Right352,00

0

52

1.As a group, please use the

laptop next to your table to

check your answers for 1-17.

2.The favorite for this activity is

called Metric Conversions.

1. 133 m = 0.133 km

2. 85 m= 8500cm

3. 345.6 g= 0.3456kg

4. 72 cm= 720mm

5. 34.7 cm= 0.347m

6. 451 kg= 451000g

7. 92 L= 92000mL

8. 49.7 mL= 0.00497daL

9. 28cm= 0.28m

10. 4500dag= 45kg

11. 876L= 87,600cL

12. 5.98cm= 59.8mm

13. 37.02dg= 3702mg

14. 876L= 8,760dL

15. 5.98m= 598cm

16. 4500g= 4.5kg

17. 28 km= 28,000m

How many mm are found in 1 cm?

How long is the line segment in mm?

How long is the line segment in cm?

How long is the line segment in mm?

How long is the line segment in cm?

How long is the line segment in mm?

How long is the line segment in cm?

Work with your partner to practice measuring with a

metric ruler.

CHALLENGE!What happens to an inchworm when we use metrics?

To find the answer, lay a ruler across the right side of a piece of paper. Find the correct mark on the ruler for

each letter. Write the letter above the ruler.

H = 6.8 cm R = 208 mmG = 23.2 cm, 92 mm O = 14 cmU = 224mm N = 8.4 cm, 12.4 cmC = 6 cm A = 76 mm, 156mmE = 1 dm, 2dm B = 216 mmL = 4 cm, 17.6 cm, 32mm ‘ = 24mmT = 192mm, 132 mm, 16mmI = 11.6 cm, 18.4 cm, 8 mm

1.Convert 5,720 km to cm.

2.Convert 23 mg to dag.

1. Complete textbook form2. Put your name in your

book in INK3. Have Mrs. Lock sign book and collect paper

4. Cover book by Friday, 9/25

DO NOT POKE AROUND!