Final answer:
Completing tables with missing units or abbreviations requires knowledge of measurement systems. Calculating frequencies involves statistical methods. Matching substances with descriptions is common in science subjects.
Step-by-step explanation:
Completing tables with missing information is a common task in mathematics, often involving understanding of units of measurement or interpreting data. When filling in units and abbreviations, one must be familiar with standard units of measurement and their corresponding short forms. For example, if the unit is 'meter,' the abbreviation would be 'm.' Similarly, to complete tables with numerical data, such as frequencies, one must calculate using the given data. This might involve statistics, especially when dealing with relative frequencies and cumulative relative frequencies.
Selecting the correct spelling of words is an English exercise, although it may appear in various academic context. In the case of selecting the correct verb to complete sentences, this is also an exercise within the realm of English, focusing on grammar and syntax.
Matching substances with their groups, as described in the data matching task, is a characteristic of classifications within science subjects, potentially including chemistry or biology, depending on the nature of the substances and groups.