The estimated digit in each of these examples is the last numerical value in each one. For example, for 8.6 meters, the estimated digit is 0.6.

This is because numbers are either rounded up or down to create smaller, more manageable values. It is impossible, in the majority of instances, to be 100% accurate when we measure anything. This may seem to be a peculiar assertion to make when tape measures, rulers and other instruments that calculate sizes are employed but on the whole they give a general measurement rather than a precise one. This is true even for detailed measurements such as millimeters.

This means that something that may actually measure a length of 8.63194 meters will be undetected by the majority of us because the distinctions on a tape measure are inadequate at this level. This means that the estimated digit in this number is 8.6 and cannot be determined as correct.

It does not matter whether the measurement is one of length, area, weight or temperature, for example; they are all affected by this criteria and cannot be relied on to be completely accurate.

This means that the other figures that have been given have an estimated digit of 0.05 for 45.25 grams and 0.0 for 25.0 degrees C.

The beauty of math is that what initially seems to be totally incomprehensible becomes, not only clear when it is understood, but something that really makes sense.

This is because numbers are either rounded up or down to create smaller, more manageable values. It is impossible, in the majority of instances, to be 100% accurate when we measure anything. This may seem to be a peculiar assertion to make when tape measures, rulers and other instruments that calculate sizes are employed but on the whole they give a general measurement rather than a precise one. This is true even for detailed measurements such as millimeters.

This means that something that may actually measure a length of 8.63194 meters will be undetected by the majority of us because the distinctions on a tape measure are inadequate at this level. This means that the estimated digit in this number is 8.6 and cannot be determined as correct.

It does not matter whether the measurement is one of length, area, weight or temperature, for example; they are all affected by this criteria and cannot be relied on to be completely accurate.

This means that the other figures that have been given have an estimated digit of 0.05 for 45.25 grams and 0.0 for 25.0 degrees C.

The beauty of math is that what initially seems to be totally incomprehensible becomes, not only clear when it is understood, but something that really makes sense.