8.6 first number after the decimal is the tenths place then the second number after the decimal is the hundredths
8.61 to the nearest tenth is 8.6 because the 1 tells you the 6 will not change.
To round 8.61 to the nearest tenth, identify the tenths (6) and hundredths (1) places. Since the hundredths digit is less than 5, we keep the tenths digit the same. Thus, 8.61 rounded to the nearest tenth is 8.6.
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