State how much larger or smaller the first unit is than the second
Square decimeter, square kilometer
The first unit, square decimeter, is smaller than the second unit, square kilometer, by a factor of 1 trillion.
To determine how much larger or smaller the first unit is than the second, we can use conversion factors and perform the conversion between the two units.
1 square kilometer is equal to 1,000,000 square meters (as there are 1,000 meters in a kilometer and area is measured in square units).
1 square meter is equal to 100 square decimeters (as there are 10 decimeters in a meter, and we square that since it is an area).
Therefore, 1 square kilometer is equal to 1,000,000 * 100 = 100,000,000 square decimeters.
So, the first unit, square decimeter, is 100,000,000 times smaller than the second unit, square kilometer.