2. 10 We know this unit as 1 meter.
Long, long ago, people used to use their own body parts to
measure objects.
But there were problems.
People created a new system
that was based on something
reliable.
Something universal.
Something logical.
Something never-changing.
The Earth!
They took the distance from the North Pole to
the equator and divided it by 10
North Pole
,000,000 meters 10
Equator
We know this unit as 1 meter.

3. Each unit is 10 times bigger than the previous unit.
1 mm
1 cm
1 dm
Each unit is 10 times bigger than the previous unit.
Based on the number 10, or multiples of 10 10
TEN
1 kilometer=
10 hectometers=
100 dekameters=
100 meters=
1000 decimeters=
10,000 centimeters=
100,000 milliliters
x10
x10
x10
x10
x10
x10

4. Kilometer
1000
(Thousand)
Hectometer
100
(Hundred)
Decameter 10
(Ten)
Unit 1
(One)
Decimeter .1
(Tenth)
Centimeter
.01
(Hundredth)
Millimeter
.001
(Thousandth)

5. Kilometer
1000
(Thousand)
Hectometer
100
(Hundred)
Decameter 10
(Ten)
Unit 1
(One)
Decimeter .1
(Tenth)
Centimeter
.01
(Hundredth)
Millimeter
.001
(Thousandth)

6. Kiloliter
1000
(Thousand)
Hectoliter
100
(Hundred)
Decaliter 10
(Ten)
Unit 1
(One)
Deciliter .1
(Tenth)
Centiliter
.01
(Hundredth)
Milliliter
.001
(Thousandth)

7. Kiloliter
1000
(Thousand)
Hectoliter
100
(Hundred)
Decaliter 10
(Ten)
Unit 1
(One)
Deciliter .1
(Tenth)
Centiliter
.01
(Hundredth)
Milliliter
.001
(Thousandth)

8. Kilogram
1000
(Thousand)
Hectogram
100
(Hundred)
Decagram 10
(Ten)
Unit 1
(One)
Decigram .1
(Tenth)
Centigram
.01
(Hundredth)
Milligram
.001
(Thousandth)

9. Kilogram
1000
(Thousand)
Hectogram
100
(Hundred)
Decagram 10
(Ten)
Unit 1
(One)
Decigram .1
(Tenth)
Centigram
.01
(Hundredth)
Milligram
.001
(Thousandth)

10. Length Mass Volume 1000 cmᵌ A cubic centimeter (cmᵌ)
is 1 cm x 1 cm x 1 cm
1 g
1 cmᵌ = 1 g (water)
1000 cmᵌ
Mass
1 cmᵌ
1 ml
1 kg
Volume
1 kg = 1000 ml (water)
1000 cubic centimeters = 1 liter

11. Because an elephant footprint looks like a zero!
1 Spot to the right
To convert to a smaller unit, move the decimal point to the right or multiply by 10s.
Kilo
1000
(Thousand)
2 Spots to the right
Hecto
100
(Hundred)
Deca 10
(Ten)
Unit 1
(One)
Deci .1
(Tenth)
Centi
.01
(Hundredth)
To convert to a larger unit, move the decimal point to the left or divide by 10s.
Milli
.001
(Thousandth)
Why an Elephant?
Because an elephant footprint looks like a zero!
For Example… There are ______ centimeters in 3 meters.
Answer: 3
Elephant Footprints! (zeros)
1 Spot to the right
2 Spots to the right

12. There are ______ millimeters in 1.5 decimeters.
Example
1 Spot to the right
Kilo
1000
(Thousand)
2 Spots to the right
Hecto
100
(Hundred)
Deca 10
(Ten)
Unit 1
(One)
Deci .1
(Tenth)
Centi
.01
(Hundredth)
Milli
.001
(Thousandth)
There are ______ millimeters in 1.5 decimeters.
Answer:
1 Spot to the right
2 Spots to the right

13. There are ______ kilometers in 2.8 decameters.
Example
1 Spot to the left
Kilo
1000
(Thousand)
2 Spots to the left
Hecto
100
(Hundred)
Deca 10
(Ten)
Unit 1
(One)
Deci .1
(Tenth)
Centi
.01
(Hundredth)
Milli
.001
(Thousandth)
There are ______ kilometers in 2.8 decameters.
Answer:
1 Spot to the left
2 Spots to the left

14. There are ______ hectometers in 7.5 meters.
Example
1 Spot to the left
Kilo
1000
(Thousand)
2 Spots to the left
Hecto
100
(Hundred)
Deca 10
(Ten)
Unit 1
(One)
Deci .1
(Tenth)
Centi
.01
(Hundredth)
Milli
.001
(Thousandth)
There are ______ hectometers in 7.5 meters.
Answer:
1 Spot to the left
2 Spots to the left