num16

The choice when expressing numbers is between using a word to express the number (e.g., three) or a figure (e.g., 3).  Please check whether or not the number is expressed correctly.  Then  highlight the rule that governs the use of the number in this instance.

After the dictation task, participants either reviewed their notes or re-read the passage for three minutes.

The expression of the number is   correct     incorrect       because: