FIRST BOOK

OF

ARITHMETIC

FOR

TLF USE OF SCHOOLS.

DUBLIN:

PUBLISHED BY DIRECTION OF THE

COMMISSIONERS OF NATIONAL EDUCATION IN IRELAND,
At their Office in Marlborough-street.

SOLD BY

W.CURRY, JUN. & CO., DUBLIN; R. GROOMBRIDGE & SONS, LONDON;
GEORGE PHILIP, LIVERPOOL; FRRASE & CO., EDINBURGH;
ARMOUR & RAMSAY, AND DONOGHUE &MANTZ, MONTREAL, CANADA;
AND CHUBB & CO., HALIFAX, NOVA SCOTIA,

1850.

FOR H. M. STATIONERY OFFICE.

PRINTED BY G. & J. GRIERSON, HER MAJESTY'S PRINTERS,

DUBLIN 1850.

ECA.

LOS

PREFACE,

In this First Book, the practical, and not the theoretical part of Arithmetic is treated of, but it is not intended that Theory should be separated from Practice. The teachermay, by means of a black board and a piece of chalk, make the pupils more readily understand the rules, than could be done by any written explanation, especially at this stage of their progress.

For the theoretical part of Arithmetic, teachers and monitors are referred to the

Second Book of Arithmetic published by the Commissioners.