The New Normal Mental Arithmetic: A Thorough and Complete Course by Analysis and Induction

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Christopher Sower Company, 1873 - Mental arithmetic - 176 pages
 

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Page 33 - Division is the process of finding how many times one number is contained in another of the same kind.
Page 60 - The Square Root of a number is one of the two equal factors of that number ; the Cube Root is one of the three equal factors of that number, etc.
Page 27 - Multiplication is the process of taking one number as many times as there are units in another.
Page 19 - The process of finding the difference between two numbers is called SUBTRACTION.
Page 117 - If 4 men can do a piece of work in 6 days, in how many days can 3 men do twice as much work ? 15.
Page 95 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Page 25 - If 4 men can do a piece of work in 20 days, how long will it take 5 men to do a similar piece of work ? 2.
Page 95 - 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 93 - TABLE. 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 " 1 Ton,

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