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31. Find in ares the sum of 160 hectares, 490 ares,

3.14

ares, and 16.34 hectares.

Ans. 18127.14 ares. 32. From 316.456 m take 305.57 m. Ans. 10.886 m.

33. If from a bin containing 30 hectoliters of wheat there be taken away 525 liters, how much will remain ? Ans. 24.75 hl.

34. If I bought at one time 30.15 kilos of sugar, at another 47.54 kilos, and then sold 63.69 kilos, how much had I left ?

Ans. 14 k. 35. What cost 30.75 liters of oil at 40 cents a liter?

Ans. $12.30. 36. What cost 8 steres of wood at $3.50 a stere ? Ans. $28.

37. How much wheat will a bin hold, which is 1 meter wide, 1.5 meter deep, and 3 meters long ? Ans. 45 hectoliters.

38. Paid for 46.5 kilos of sugar $9.30,. how much was it a kilo ?

Ans. $0.20. 39. If a farmer divide his farm containing 963.36 hectares into 9 equal parts, how much will be the value of each part at $80 a hectare?

Ans. $8563.20. 40. In 345 meters, how many

feet? Since in 1 meter there are 3.28 feet, there will be in 345 meters 345 times 3.28 feet, or 1131.8 feet.

41. In 2500 pounds, how many kilos? Ans. 5511.5 kilos. 42. In 5 hogsheads of 63 gallons each, how many liters ?

Ans. 1192.59 liters. 43. When the price of wheat is $1.20 per bushel, how much is it per

hectoliter ? If wheat is $1.20 per bushel, it must be per hectoliter, which is 2.837 times a bushel, 2.837 times $1.20, or $3.40+.

44. How much must be paid for a box of sugar containing 80 kilos, at the rate of 15 cents a pound ? Ans. $26.45+,

45. Bought 30 meters of cloth at $2.50 per meter, at what price per yard must it be sold to gain $25 ? Ans. $3.04+

"Advance In methods of Instruction makes now - improved text-books a nocesehty,"

SCHOOL BOARDS and TEACHERS are respectfully invited to examine the improved edition, just published, of

GREENLEAF'S

NEW PRACTICAL, ARITHMETIC,

An entirely new work, containing many important improvements, calca. lated to inåugurate a much-needed reform, both in the teaching of the science and of the art of numbers.

It was the first book of the kind to give a full and reliable presentation of the Metric System of Weights and Measures, as legalized by Congress.

Also, the first to make written arithmetic intellectual in all its processes, and practical in all its applications ;

And justly claims pre-eminence for enforcing educational results by orderly arrangement of topics, and by systematic review questions and exercises.

GREENLEAF'S NEW PRACTICAL ARITHMETIC

Is complete in itself, and sufficient for Common Schools and Seminaries

It is the long desired practical course, time saving and labor saving.

It avoids the usual multiplicity of rules, in Multiplication, Division, Reduction, etc., which have been found unnecessarily to tax the memory, or confuse the mind.

It contains no useless lumber of obsolete weights and measures, "pounds, shillings, and pence," cross multiplication," etc., to discourage and retard progress.

The extraordinary success of the first editions of this new work is abundant evidence of its meeting present educational wants, and of its being

TIE RIGHT BOOK AT THE RIGHT TIME.

1

STATE OF Rhode ISLAND AND PROVIDENCE PLANTATIONS,
DEPARTMENT OF PUBLIC INSTRUCTION,

PROVIDENCE, Oct. 2, 1866. I have examined the New PRACTICAL ARITHMETIC. Its state. ment of principles appears clear and concise, and sufficiently well illustrated by appropriate examples. While avoiding redundancy, it is comprehensive in its scope, and practically complete in detail. I consider it well worthy of the attention of those who are selecting a new text-book in this department.

J. B. CHAPIN, Commissioner of Public Schools of R. L

ARNOLD STREET GRANMAR SCHOOL,

PROVIDENCE, Oct. 11, 1866. I must pronounce GREENLEAF's New PRACTICAL ARITHMETIC a very superior practical book. The arrangement of topics is natural and logical, the definitions are clear and concise, and the examples are exceedingly practical. The mental, analytical, and general review exercises are features of universal interest and importance, while the introduction and practical use of the Metric System of Weights and Measures, and the treatment of Internal Revenue, make the work more complete than any yet published. The methods of treating Percentage, Annual Interest, Balancing Accounts, Domestic and Foreign Exchange, and the diagrams which illustrate different portions of the book, are worthy of special commendation.

T. W. BICKNELL, Principal, and President of R. I. Institute.

High School, LONSDALE, R. I., Sept. 7, 1866. I have always considered GREENLEAF's ARITHMETICS excellent. It has long been a common remark among teachers, that GREENLeaf's COMMON SCHOOL ARITHMETIC is the best for classes requiring a book of that grade. But I think GREENLEAF's New PRACTICAL is superior to that work. GREENLEAF's New ELEMENTARY ARITHMETIC supplies a desideratum long feit. We have used it in our intermediate course. I can confidently reconimend GREENLEAF'S ENTIRE SERIES.

J. M. ROSS. Principal. 29

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