There are many children who very vague concepts about numbers. Although the work level is for Grade 3, you may find older students without these words or concepts. One of the students' performance tasks is to explain what they are doing. These worksheets are to give them the words to do that explaining for adding and subtracting. Each section is repeated. The first copy is to read and discuss. The second copy is for filling in the blanks.
minuend "that amount to be diminished", subtrahend "that amount pulled away", difference "that amount found"