## A Secondary Arithmetic |

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acre altitude amount amperes approx approximately arithmetic balance bank base bill board foot bonds bought broker bushel called candle power cash cent column common logarithms compound interest compounded annually computation contains cost cube root cubic cubic foot cylinder dealer decimal point diameter discount distance divided dividend division divisor draft DRILL EXERCISES Example exponent expressed factors feet Find the weight fraction frustum gain given number Hence inches integer investment length list price load logarithm mantissa of log marked price maturity method multiply ohms paid parallelopiped payment place-value premium pressure problems pulley pyramid quotient radius received represented resistance revolutions per minute scale selling sides sold specific gravity square root standard candle subtraction surface tank thick triangle unit usually volume wheel wide wire yards yearly Ypsilanti

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Page 137 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30j square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.

Page 36 - Multiplying or dividing both terms of a fraction by the same number does not change the value of the fraction.

Page 170 - Specific Gravity. The specific gravity of a substance is the ratio of the weight of the substance to the weight of the...

Page 40 - By 3, if the sum of the digits is divisible by 3. By 4, if its tens and units are together divisible by 4. By 5, if the units figure is 5 or 0.

Page 126 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.

Page 155 - May not be classified as a defect. board foot — a unit of measurement represented by a board 1 ft long, 1 ft wide, and 1 in. thick. Abbreviation ft. bm; bd. ft., fmb.

Page 138 - Length 10 millimeters (mm.) = 1 centimeter (cm.) 10 centimeters = 1 decimeter (dm.) 10 decimeters = 1 meter (m.) 10 meters = 1 dekameter (Dm.) 10 dekameters = 1 hektometer (Hm.) 10 hektometers = 1 kilometer (Km.) 10 kilometers = 1 myriameter (Mm.) Measures of Surface 100 sq.

Page 216 - P = mean effective pressure in pounds per square inch; L = length of stroke in feet; A =area of piston in square inches; N = number of strokes per minute = revolutions per minute x 2.

Page 163 - ... is equal to one. third of the product of its base and altitude (P. XVI., C. 2) ; hence, the sum of the volumes of the triangular pyramids, is equal to one-third of the product of the sum of their bases by their common altitude. But the sum of the triangular pyramids is equal to the given pyramid, and the sum of their bases is equal to the base of the given pyramid: hence, the volume of the given pyramid is equal to onethird of the product of its base and altitude ; which was to be proved. Cor....

Page 193 - The intensity of the illumination varies inversely as the square of the distance from the source of light.