1. Metric Measurement
Ms. Crusenberry

2. Vocabulary Customary – ordinary
Gram, g – measure of mass about equal to the weight of a paper clip
Liter, l – measure of capacity about equal to the capacity of a coffee can
Meter, m – measure of length about equal to the height of a doorknob
Metric system – a system of measuring using the gram and the meter as basic units
Prefix – set of letters placed before a unit of measuremt

3. Chart Prefix Value Symbol Example Kilo One thousand K Kilometer Hecto
One hundred H
Hectometer
Deka
Ten Da
Dekagram
Deci
One-tenth D
Decimeter
Centi
One-hundreth C
Centigram
Milli
One-thousandth M
Milliliter

4. Questions What is one-tenth of a liter called?
What is one-thousandths of a gram called?
How many meters are in a dekameter?
How many liters are in a hectoliter?
How many grams are in a milligram?

5. Answers
Deciliter
Milligram 10
100
1000

6. Length
Centimeter, cm – a measure of length about equal to the width of a large paper clip
Millimeter, mm – measure of length about equal to the width of the wire in a paper clip

7. Metric Ruler

8. Practice Practice Practice
Measure each of the following line segments _____________________________________ _________________ ___________________________________________ ___________________________

9. The Best Unit
Meters – used to measure things such as material for a dress, the width of your yard or the height of a building
Centimeters – used to measure smaller things such as desktops and picture frames
Millimeters – used to measure small things such as nuts, bolts an film
Kilometers – used to measure long distances

10. Choosing the Best Unit
Kilometer, km – a distance of 1000 meters, or a little more than a half a mile
1. height of a building – mm 396 cm 396 m 396 km length of your classroom 6 mm 6 cm 6 m 6 km length of your foot 23 mm 23 cm 23 m 23 km

11. Answers
396 m
6 m
23 cm

12. Measurements of Length
1 kilometer
Equals
1000 meters
1 meter
100 centimeters
1 centimeter
10 millimeters
1000 millimeters

13. Conversion – Centimeters/Meters
Conversion factor – the number you multiply by to change to another unit of measure
Rule – to change meters to centimeters, MULTIPLY by 100 to move the decimal point 2 places to the right ex – 5.2 m = 520 cm
Rule – to change centimeters, DIVIDE by 100 or move the decimal point 2 places to the left. ex – 63 cm = .63 m

14. Conversion – Grams/Liters
1000 g = 1 kg
.25 L – 250 ml
.50 L = 500 ml
.75 L = 750 ml
2.75 L = 2750 ml

15. Converting Using Proportions
cm = cm Ex. How many millimeters is 10 cm? mm mm 1 = = x 1x = 100 (divide each side by 1) X = 100mm

16. Another Way Large to small – MULTIPLY
meters is bigger than centimeter and millimeter
centimeter is bigger than millimeter
kilometer is bigger than meter
gram is bigger than kilogram
Small to large – DIVIDE
centimeters and millimeters are smaller than meters
millimeters are smaller than centimeters
meters are smaller than kilometers
kilograms are smaller than grams

17. The Best Way!!!!!
K(kilo) H (hecto) D (deka) 1 (m, g, l) D (deci) C (centi) M (milli) move decimal to the left move decimal to the right Example: 10 m = _________ mm * I am moving to the right, and I moved 4 to the right, so I need to move my decimal 4 places to the right which equals 100,000

18. Practice Practice Practice
1a. 10 m = _____ cm 1b. 10 km = ______ m 2a. 30 mm = _____ cm 2b. 2 km = ______ m 3a g = ______ kg 3b m = _____ km 4a. 1 m = ______ cm 4b. 10 km = ______ m 5a. 2 L = _____ ml 5b. 5 L = _____ ml

19. Answers
1a b a. 3 2b a. 2 3b a. 10 4b a b. 5000

20. Different Increments
Addition – convert all measurements to the same unit ex: .34 km + 63 m cm m m m = m

21. Practice Practice Practice
64 m cm + 12 m = _____ m
58 mm + 8 cm + 37 mm = _____ mm
18 km + 7 km m = _____ km

22. Answers
***Hint – use proportions
77.68 cm
175 mm
29.38 km

23. Area The amount of space inside a shape Measured in square units
cm2 – square centimeter
km2 – square kilometer
Length, l – distance from end to end
m2 – square meter
mm2 – square millimeter
Square unit – a measure of area
Width, w – the distance across
Formula is A = l x w

24. Practice Practice Practice
Rectangle 1 – l = 46 mm, w = 34 mm
Rectangle 2 – l = 24 cm, w = 18 cm
Rectangle 3 – l = 15 m, w = 12 m
Rectangle 4 – l = 20 km, w = 15 km

25. Answers
1564 mm2
432 cm2
180 m2
300 km2

26. Problem Solving
You want to fence in your yard. You measured the property and found that its sides were 27m, 35m, 28m, and 39m. How many meters of fence will you need?
You are carpeting three rooms. They measure 8 m by 7m, 4m by 5m, and 3.5m by 4.5m. How many square meters of carpet do you need?

27. Problem Solving Answers
27m + 35m + 28m + 39m = 139m2
8m x 7m = 56 4m x 5m = m x 4.5m = = m2

28. Volume Volume – number of cubic units that fill a container
Measured with cubic units
Most commonly seen as the unit with a superscript number 3 - (mm3)
V = l x w x h
cm3 – cubic centimeter
Cubic units – units used to measure volume
m3 – cubic meter
mm3 – cubic millimeter

29. Practice Practice Practice
Calculate the volume of the following rectangluar prisms 1. w = 6 cm, l = 12 cm, h = 4 cm 2. w = 8.7 cm, l = 8.2 cm, h = 7 cm

30. Answers
288 cm3
cm3

31. Problem Solving
A rectangular cake pan measures 20 cm by 15 cm by 8 cm. What is its volume?
How much dirt is needed to fill in a hole that measures 4 meters by 3.2 meters by 3 meters?

32. Problem Solving Answers
20 x 15 x 8 = 2400 cm3
4 x 3.2 x 3 = 38.4 m3