#### Answer

There are 1000 cubic decimeters in a cubic meter.
A cubic meter is 1000 times greater than a cubic decimeter.

#### Work Step by Step

$1~m = 10~dm$
We can find how many cubic decimeters are in a cubic meter.
$1~m^3 = 1~m \times 1~m \times 1~m$
$1~m^3 = 10~dm \times 10~dm \times 10~dm$
$1~m^3 = 1000~dm^3$
There are 1000 cubic decimeters in a cubic meter. Therefore, a cubic meter is 1000 times greater than a cubic decimeter.