Answer:
1.79 1.979 1.991 2.185
Explanation:
Look at the ones place. 2 is greater than 1, so it's the largest one
Look at the tenths place. 7 is less than 9, so it's the smallest one.
We're left with 2 now. Look at the hundredths place. 9 is >7, so your order is
1.79 1.979 1.991 2.185