Orton's Lightning Calculator and Accountant's AssistantH. D. Orton & Company, 1871 - 186 pages |
From inside the book
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Page 37
... nearest unit of any two numbers , one or both of which involves a fraction . GENERAL RULE . To multiply any two numbers to the nearest unit , 1st . Multiply the whole number in the multiplicand by the fraction in the multiplier to the ...
... nearest unit of any two numbers , one or both of which involves a fraction . GENERAL RULE . To multiply any two numbers to the nearest unit , 1st . Multiply the whole number in the multiplicand by the fraction in the multiplier to the ...
Page 38
... nearest unit is 3 , and 4 of 11 81 8 to the nearest unit is 3 , making 6 , so we sim- ply say , 8 times 11 are 88 and 6 are 94 , Ans . 94 REASON . of 11 is nearer 3 than 2 , and 3 of 8 is nearer 3 than 2. Make the nearest whole number ...
... nearest unit is 3 , and 4 of 11 81 8 to the nearest unit is 3 , making 6 , so we sim- ply say , 8 times 11 are 88 and 6 are 94 , Ans . 94 REASON . of 11 is nearer 3 than 2 , and 3 of 8 is nearer 3 than 2. Make the nearest whole number ...
Page 39
... nearest unit is 17 , so we simply say , 25 times 128 are 3200 and 17 are 3217 , the answer . 1281 25 3217 . PRACTICAL EXAMPLES FOR BUSINESS MEN . 1. What is the cost of 171⁄2 lbs . sugar at 183 cts . per lb. ? 181 Here of 17 to the nearest ...
... nearest unit is 17 , so we simply say , 25 times 128 are 3200 and 17 are 3217 , the answer . 1281 25 3217 . PRACTICAL EXAMPLES FOR BUSINESS MEN . 1. What is the cost of 171⁄2 lbs . sugar at 183 cts . per lb. ? 181 Here of 17 to the nearest ...
Page 137
Hoy D. Orton. N. B. - lf a number , whose unit figure is 5 , be multiplied by 8 , and does not result in three ciphers on the right , the number is not a cube . " To find the Approximate Cube Root of Surds . RULE . - Take the nearest ...
Hoy D. Orton. N. B. - lf a number , whose unit figure is 5 , be multiplied by 8 , and does not result in three ciphers on the right , the number is not a cube . " To find the Approximate Cube Root of Surds . RULE . - Take the nearest ...
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Common terms and phrases
18 inches 20 per cent 60 days acres adding aliquot annex answer avoirdupois base breadth cancel ciphers circle X circumference completes the product computing interest contain cost cube root cubic feet cubic foot cubic inches decimal places dimensions divide the product divisor left Drachms EXAMPLE EXAMPLE.-How find the interest find the number foot fractions frustum girth given number gives the interest grains GUNTER'S CHAIN half hence hewn hight inches thick integers joists last product length in feet measure method mixed number multiplicand multiply any number multiply the principal nearest unit NOTE number of bushels number of days number of months Operation ounce pounds quotient rate per cent reduced rods rule RULE.-Divide RULE.-Multiply side simply say single line solid content square number square root stick of timber superficial Troy weight unit figure usury vulgar fractions whole number wine gallons yards
Popular passages
Page 183 - OF TIME. 60 Seconds = 1 Minute 60 Minutes «= 1 Hour 24 Hours => 1 Day 7 Days = 1 Week 28 Days =• 1 Lunar Month...
Page 80 - Thou shalt not lend upon usury to thy brother; usury of money, usury of victuals, usury of any thing that is lent upon usury: unto a stranger thou mayest lend upon usury; but unto thy brother thou shalt not lend upon usury...
Page 149 - ... the square root of the last product will be the area of the triangle. EXAMPLE. Suppose I have a triangular fish-pond, whose three sides measure 400, 348, and 312yds; what quantity of ground does it cover?
Page 182 - 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 township 24, north of range 7 west, or as the case might be ; and sometimes will fall short and sometimes overrun the number of acres it is supposed to contain. The nautical mile is 795 4-5 feet longer than the common mile. SURVEYORS
Page 95 - To find the interest of any sum at 6 per cent, per annum for any number of months and days.
Page 132 - ... broad; what length must a ladder be to reach from the outside of the ditch to the top of the castle?
Page 87 - If the time consists of years and months, reduce them to montJis, and place 12 (the number of months in a year) on the left hand side of the line. Should the time consist of months and days, reduce them to days or decimal parts of a month. If reduced to days, place 36 on the left. If to decimals parts of a month, place 12 only as before. Point off two decimal places when the time is in months, and three decimal places wlien the time is in days.
Page 137 - By repeating the operation with the root last (blind as an assumed root, we may obtain results to any degree of exactness ; one operation, however, is generally sufficient. EXAMPLES. 1. Required the cube root of 66. The cube root of 64 is 4. Now it is manifest that the cube root of 66 is a little more than 4, and by taking a similar proportion to the preceding, we have 64x2=128...
Page 49 - Multiply the diameter in inches at the small end, by one-half the number of inches, and this product by the length of the log in feet, which last product divide by 12.
Page 64 - ... of tons. An easy mode of ascertaining the value of a given number of Ibs. of hay, at a given price per ton of 2000 Ibs. RULE. — Multiply the number of pounds of hay (coal, or anything else which is bought and sold by the ton) by...