1. Metric Conversions
7th Grade
Math Online

2. Blueprint Skills SPI 7.4.3 Convert from one unit to another within
the same system

3. BASIC UNITS
OF THE METRIC SYSTEM
The meter is the base unit of
length in the metric system.
The gram is the base unit of mass
in the metric system.
The liter is the base unit of capacity
in the metric system.

4. Prefixes Prefix Meaning in words Meaning in numbers Kilo Thousand
1,000
Hecto
Hundreds
100
Deka
Tens 10
Deci
Tenths .1
Centi
Hundredths
.10
Milli
Thousandths
.100

5. To convert from one unit to another is like walking up and down steps.
Converting Units
To convert from one unit to another
is like walking up and down steps.
Which way?
Up or down?

6. Going Up???
When going from a smaller unit to a
larger unit, you move UP the steps
and the decimal moves to the
LEFT .

7. Going Down???
When going from a larger unit to a smaller unit, you move DOWN the steps and the decimal moves to the RIGHT .

8. Let’s take a look!!!

9. King Henry Died By Drinking Chocolate Basic Unit Liters Meters Grams
Kilo
King
UP steps,
Decimals move
to the LEFT
Henry
Hecto
Deka
Died
Basic Unit By
Deci
Drinking
Centi
Chocolate
Milli
Basic Unit
Liters
Meters
Grams
Milk
Down steps,
Decimals move
to the RIGHT

10. Practice Time
4.5 m = ? cm

11. * * 4.5 What to do first in the problem 4.5 m = __ cm ?
Find YOUR step, then move!!!
Basic
Liter
Meter
Gram *
Kilo
Start here at Meters and
Move DOWN to Centimeters.
Decimal place moves to the
RIGHT the same number
of steps.
Hecto
Deka *
Basic
4.5
Deci
Centi
Milli

12. As you move the decimal
you will need to add zeros. .

13. Is this your Final Answer?
4.5 m = 450 cm

14. Good Job!!

15. Quiz Time
28 cm = ? mm
438 cm = ? m
72 g = ? mg
202 g = ? Kg
2L = ? mL

16. How did We do??
28 cm =
280 mm
cm =
4.38 m
g =
72,000 mg
g =
0.202 kg
5. 2 L =
2,400 L

17. We Are Done
Yeah!!!