## Annotation

The use of a shift in arithmetic leads to the addition of terms with different units of measurement.

Consider the results of a shift in arithmetic addition. A shift is possible when performing addition in a column. For example, let's take a three-digit number and add to it the same number without a shift, with a shift by one position and with a shift by two positions. At the same time, we will observe the rule adopted when shifting infinite series - we discard the numbers of the second term that go beyond the boundaries of the first number. Addition with a shift in a column

Shifting by a different number of positions leads to different results in the same way as when shifting infinite series. You can write the same expressions in a line with the subsequent indication of the units of measurement for each of the terms. Addition with a shift in a line

## Conclusion

The shift leads to a change in the unit of measurement of the shifted term. The shift is a violation of the basic law of addition - you cannot add terms with different units of measurement.