18 A short and easy explanation of the principal Rules of Arithmetic in Question and Answer. Q. What is Arithmetic ? A. Arithmetic is the art of computing by numbers. Q. Which are its principal rules ? A. These five, viz. Numeration, Addition, Subtraction, Multiplication, and Division. Q. What is the use of Numeration ? A. Numeration teaches to read and write numbers by their true value. Q. What is the use of Addition ? A. Addition teaches to collect numbers into one total sum. Q. How many kinds of Addition are there ? A. Two, Simple and Compound. Q. What is Simple Addition ? A. Simple Addition teaches to collect numbers of the same denomination into one total sum. Q. What is Compound Addition? A. Compound Addition teaches to collect numbers of different denominations into one sum.
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