0 is the ones place 8 is the tenths place 6 is the hundredths place 0 is the thousandths place 0 is the ten-thousandths place Look at the ten-thousandths place. since it is 0, you do not round the thousandths up, so you are left with 0.8600, or just 0.86
To round 0.86 to the nearest thousandth, you check the thousandths place (0) and the next digit (0). Since the next digit is less than 5, you do not round up, resulting in 0.860 or simply 0.86.
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