THE NEW STUDENT'S REFERENCE WORK
2147
SUBTRACTION.
Subtraction is the process of taking one number from another.
The terms used are the minuend, subtrahend, and remainder.
The minuend is the larger number, the number to be diminished.
The subtrahend is the smaller number, the number to be subtracted, or taken away. j
The remainder is the difference between the minuend and the subtrahend.
The sign of subtraction is —, and is read minus.
The objective work in subtraction is carried along with the addition work.
As, 6+3=9.
9 take away 3=6.
9 take away 6=3.
6 and how many more make 9?
3 and how many more make 9?
A drill chart for subtraction of numbers up to 20.
9
8
Any number from 10 to 20 may be written in the center space, and changed often to vary the drill.
What must be added to the outside number to give the center number!
The pupil should take the number pointed out, think how many must be added to it to make 10, and add to this last number the difference between the center number and 10.
Thus, if 7 is the number pointed out, and 18 is the center number, 3+8 will be the answer=ll.
Eepeated drill requiring pupils to think numbers at once by use of the decimal system, will prepare the way for quick and accurate work later.
