Answer:
0.002 < 0.0022
Step-by-step explanation:
We look at the numbers digit by digit, until we find one which has a higher digit.
0.002
Whole digit: 0
First decimal digit: 0
Second decimal digit: 0
Third decimal digit: 2
Fourth decimal digit: 0
0.0022
Whole digit: 0
First decimal digit: 0
Second decimal digit: 0
Third decimal digit: 2
Fourth decimal digit: 2
The first different digit is the 4th decimal. There, 0.0022 has a higher digit than 0.002. So 0.0022 is greater than 0.002, or, as the problem asks 0.002 < 0.0022
