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1

THE

TEACHERS ASSISTANT,

OR

A SYSTEM

OF

PRACTICAL ARITHMETIC;

WHEREIN THE SEVERAL RULES

OF THAT USEFUL SCIENCE,

ARE ILLUSTRATED

BY A VARIETY OF EXAMPLES,

A LARGE PROPORTION OF WHICH ARE IN

FEDERAL MONEY.

THE WHOLE DESIGNED

TO ABRIDGE THE LABOUR OF TEACHERS,

AND

TO FACILITATE THE INSTRICTION OF YOUTH.

THIRD EDITION, WITH IMPROVEMENTS.

STEREOTYPED BY B. AND J. COLLINS, NEW-YORK.

LED BY STEPUEN PIKE.

PHILADELPHIA:

PUBLISHED BY BENJAMIN WARNER, 1-47 HIGH-STREET,

AND SOLD ALSO &T HIS STORE, RICHMOND, Van

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