## A Mental Arithmetic |

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12 days 12 leaves 30 days 9 leaves acres apples APPLETON Arithmetic bill brokerage bushels called centilitres centimetres common denominator contained cord cost cubic currency decagrams decimetre dimes dollars dozen drams dry measure equal feet Find the amount Find the interest flock fourths fraction gallon gold grains half hectolitres hectometre horse Improper Fraction inches Introduction price invested kilogram least common denominator leaves 9 litre lower denominations lowest terms mental calculations metre Metric System miles an hour minutes MODEL months Multiply ninths oranges ounce paid pear pennyweights person bought pine-apple present worth principal produce profit quart receive Reduce rods SECTION sells shares sheep sixths sold square subtract taining tenths third tonneau trees Troy Weight true discount twice units weeks Weight whole yards yield

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Page 84 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet — 1 square yard (sq.

Page 85 - CUBIC MEASURE 1728 cubic inches (cu. in.) = 1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...

Page 86 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt.) 4 quarts = 1 gallon (gal.) 31| gallons = 1 barrel (bbl...

Page 81 - AVOIRDUPOIS WEIGHT. 16 Drams (dr.) make 1 Ounce, oz. 16 Ounces " 1 Pound, Ib. 25 Pounds „ " 1 Quarter, qr. 4 Quarters " 1 Hundred-weight, cwt. 20 Hundred-weight

Page 87 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...

Page 83 - LONG MEASURE. 12 inches (in.) make 1 foot, ft. 3 feet "1 yard, yd.

Page 171 - In response to the growing interest in the study of the Natural Sciences, and a demand for improved text-books representing the more accurate phases of scientific knowledge, and the present active and widening field of investigation, arrangements have been made for the publication of a series of text-books to cover the whole field of sciencestudy in High Schools, Academies, and all schools of similar grade. The following are now ready. Others in preparation. THE ELEMENTS OF CHEMISTRY. By Professor...