A Mental Arithmetic, on the Inductive Plan: Being an Advanced Intellectual Course, Designed for Common Schools and Academies

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R.S. Davis & Company, 1874 - Mental arithmetic - 178 pages
 

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Page 25 - Multiplication is the process of taking one number as many times as there are units in another number.
Page 82 - Multiplying the numerator and denominator of a fraction by the same number does not alter the value of the fraction.
Page 138 - York, and travel in opposite directions, one at the rate of 4£ miles an hour, and the other at the rate of...
Page 62 - NUMBERS. 12 units = 1 dozen. 12 dozen — 1 gross. 12 gross = 1 great gross. 20 units = 1 score.
Page 33 - The Dividend is the number to be divided. The Divisor is the number by which we divide.
Page 120 - Interest is money paid for the use of money. The Principal is the sum of money which is loaned.
Page 140 - C died, it is required to divide the whole sum properly between the other two ; how much should each receive ? 20.
Page 54 - Weight is used in weighing groceries and all coarse articles ; as sugar, tea, coffee, butter, cheese, flour, hay, &c., and all metals except gold and silver. 16 drams (dr.) make 1 ounce, marked oz. 16 ounces " 1 pound, " Ib. 25 pounds " 1 quarter, " qr. 4 quarters " 1 hundred weight, cwt. 20 hundred weight
Page 164 - Which proves that the square of a number composed of tens and units contains, the square of the tens plus twice the product of the tens by the units, plus the square of the units.
Page 55 - Measure 12 inches (in.) = 1 foot (ft.) 3 feet = 1 yard (yd.) 5$ yards or 16$ feet = 1 rod (rd.) 320 rods or 5280 feet = 1 mile (mi.) Square Measure 144 square inches (sq.

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