To round a number to a certain place value, look at the next digit and determine if it is higher/equal to 5 or lower than /equal to 5. If it is higher than 5, increment (increase) the given place value. If it is lower than 5, leave the given place value as it is.
73.129 (The one is in the tenths place). We see that the digit next is 2, but since it is lower than 5, we will leave it as it is, giving us 73.1
<span>73.184 (The number on is in the tenths place). We see that the next digit is 8, and since that is higher than 5, we will increment (increase) the given place value, giving us 73.2
