Henderson & Hamlin's Lightning Calculator: Containing the Shortest, Simplest, and Most Rapid Method of Computing Numbers, Adapted to All Kinds of Business ...

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A.L. Bancroft & Company, 1872 - 50 pages
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Page 36 - Square Measure 144 square inches = 1 square foot 9 square feet = 1 square yard 30...
Page 37 - Every mass of alloyed gold is supposed to be divided into 24 equal parts ; thus the standard for coin is 22 carat fine, that is, it consists of 22 parts of pure gold and 2 parts of alloy.
Page 37 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Page 18 - ARITHMETIC is the science of numbers, and the art of computing by them.
Page 23 - A and B can do a piece of work in 5 days ; A can do it in 7 days ; in how many days can B do it ? Ans.
Page 33 - PAINTERS' WORK. PAINTERS' work is computed in square yards. Every part is measured where the colour lies ; and the measuring line is forced into all the mouldings and corners. Windows are done at so much a piece. And it is usual to allow double measure for carved mouldings, &c.
Page 8 - ... place and multiply the hundreds and tens crosswise, as you did the tens and units, and you find the thousand figure ; then, dropping both units and tens, multiply the 4X1, adding the 1 you carried, and you have 5, which completes the product.
Page 49 - ... time when each of the sums becomes due, and multiply each sum by the number of days from the time of the earliest payment to the payment of each sum respectively. Then proceed as in the last rule, and the quotient will be the average time required, in days, from the earliest payment. NOTE. — Nearly the same result may be obtained by reckoning the time in months.
Page 32 - Required the quantity of plastering in a room, the length being 14 feet 5 inches, breadth 13 feet 2 inches, and height 9 feet 3 inches to the under side of the cornice, which girts...
Page 36 - The quartets are divided in the same way. The description of a forty-acre lot would read: The south half of the west half of the south-west quarter of section 1 in...

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