Transcript METRIC CONVERSION

METRIC CONVERSION
How to
convert
within
the
metric
system
© Copyright 2003 - 2004. M. J. Krech. All rights reserved.
The Metric System
is based on sets of 10.
1 x 10 = 10
10 X 10 = 100
10 x 100 = 1,000
The Metric System
Is used by
scientists
all over the
world!
Do you remember…
King
Henry?
The pneumonic:
King Henry Died By
drinking chocolate milk
Memorize
this!
You must also know…
…how to convert within the Metric
System. Here’s a good device:
On your paper draw a line and add 7
tick marks:
Next:
Above the tick marks write the abbreviations for
the King Henry pneumonic:
K
H
D
b
d
c
m
m
L
g
Write the units in the middle under the “b”.
Let’s add the meter line:
K
H
D
b
d
c
m
Km
Hm
Dm
m
L
g
dm
cm
mm
Let’s add the liter line:
K
H
D
b
Km
KL
Hm
HL
Dm
DL
m
L
g
d
c
m
dm
dL
cm
cL
mm
mL
Let’s add the gram line:
K
H
Km
KL
Kg
Hm
HL
Hg
D
Dm
DL
Dg
b
m
L
g
d
dm
dL
dg
c
cm
cl
cg
m
mm
ml
mg
How to use this device:
1. Look at the problem. Look at the units for
the number in your problem. On the device
put your pencil on that unit.
2. Move to new unit, counting jumps and
noticing the direction of the jump.
3. Move decimal in original number the same
# of spaces and in the same direction.
Example #1:
(1) Look at the problem. 56 cm = _____ mm
Look at the unit that has a number. 56 cm
On the device put your pencil on that unit.
K
H
Km
Hm
D
b
d
c
m
Dm m
dm
cm
mm
Example #1:
2. Move to new unit, counting jumps and
noticing the direction of the jump!
K
H
D
b
Km
Hm
Dm m
d
dm
c
m
cm
mm
One jump to the right!
Example #1:
3. Move decimal in original number the same
# of spaces and in the same direction.
56 cm = _____ mm
56.0.
One jump
to the right!
Move decimal one jump to the right.
Add a zero as a placeholder.
Example #1:
56 cm = _____ mm
56cm
Example #2:
(1) Look at the problem. 7.25 L = ____ kL
Look at the unit that has a number. 7.25 L
On the device put your pencil on that unit.
K
H
D
KL
HL
DL
b
L
d
dL
c
cL
m
mL
Example #2:
2. Move to new unit, counting jumps and
noticing the direction of the jump!
K
KL
H
D
b
d
c
m
HL
DL
L
dL
cL
mL
Three jumps to the left!
Example #2:
(3) Move decimal in original number
the same # of spaces and in the same
direction.
7.25 L = ____ kL
.007.25
Three jumps
to the left!
Move decimal to the left three jumps.
Add two zeros as placeholders.
Example #2:
7.25 L = ____ kL
7.25 L =
Example #3:
Try this problem on your own:
45,000 g = ____mg
K
H
Kg
Hg
D
b
d
Dg g
dg
c
m
cg
mg
Example #3:
K
H
Kg
Hg
D
Dg
b
g
d
dg
c
m
cg
mg
Three jumps to the right!
45,000.000.
Example #3:
45,000 g =
Three jumps to the right!
Example #4:
Try this problem on your own:
5 cm = ____ km
K
H
D
b
d
Km
Hm
Dm
m
dm
c
m
cm
mm
Example #4:
K
H
D
b
d
Km
Hm
Dm
m
dm
c
m
cm
mm
Five jumps to the left!
.00005.
Example #4:
5 cm =
Five jumps to the left!
Examples #5-9:
Solve these five problems on your
own. Show your answers to your
teacher.
You may choose to use the King Henry
Notes.
You may choose the King Henry
Staircase.
You may also choose to make a King
Henry Slider.
Examples #5-9:
(5) 35 mm = ____ cm
(6) 14,443 L = ____ kL
(7) 0.00056 kg = ____ g
(8)35.4 L = ____ mL
(9)16 mm = ____ km
One last caution:
Be careful NOT
to count the
spot you start
from, where you
put your pencil
point.
Only count
the jumps!