Answer:
0.6, 2/3, 67%, 1.6
Explanation:
Let's put everything in decimal form:
2/3= 0.666666666666666666 and repeating
67% is 0.67 exactly
So 0.6 is the smallest. Then is 2/3. After that is 67%. The biggest is 1.6.
Note: Don't get confused by 2/3 and 67%. 2/3 is sometimes rounded to 0.67. But in this case, it is EXACTLY 0.6666 repeating, so 67% is larger.