Since you are doing decimals, know that you are mirroring what you would do on the left side
Your decimal number: .661
The first 6, which is .6 is the tenths place
The second 6, which is .06 is the hundredths place
1 which is .001 is the thousands place
The farther you go left, the bigger the digit number value
So when rounding up, you look at the digit after the number you are rounding
So what is after the hundredths place? Its the thousandths place which is 1
Is 61 closer to 60 or 70? Since 1 is smaller than the halfway point which is 5, its closer to 60
Answer: .661 rounded to the nearest hundredths is .660 or just simply written as .66
