The Schoolmaster's Assistant: Being a Compendium of Arithmetic, Both Practical and Theoretical, in Five Parts

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J. F. Sibell, 1825 - Arithmetic - 194 pages
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He introduces the Arabic figures in page 2 and talks about nought and cipher.

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Page 17 - Time 60 seconds (sec.) = 1 minute (min.) 60 minutes = 1 hour (hr . ) 24...
Page 46 - Ans. 16 days. 2. If 48 men can build a wall in 24 days, how many men can do it in 192 days ? Ans. 6 men.
Page 105 - When any number of terms is continued in Geometrical Progression, the product of the two extremes will be equal to the product of any two means equally distant from the extremes...
Page 53 - When the shillings are an even number, multiply the quantity by half the number of shillings, and double the first figure of the product for shillings ; and the rest of the product will be pounds.
Page 108 - ... make no considerable alteration, he being but one, imagined that he should make a good bargain, and readily, for the sake of a good dinner, and better company, entered into an agreement with them, and s,o made himself the eighth person. I demand how long they staid at that inn, and now many different positions they sat in ? Ans.
Page 140 - ALL POWERS. 1. Prepare the number given for extraction, by pointing off from the unit's place as the root required directs. 2. Find the first figure in the root, by the table of powers, which subtract from the given number. 3. Bring down the first figure in the next point to the remainder, and call it the dividend. 4. Involve the root into the next inferior power to that which is given ; multiply it by the given power, and call it the divisor. 5. Find a quotient...
Page 103 - Progression, the sum of the two extremes will equal the sum of any two means equally distant from the extremes ; as 2, 4, 6, 8, 10, 12, The two extremes, 2 + 12 = 6 + 8, the two means.
Page 101 - If the errors are alike, ie both greater, or both less than the given number, take their difference for a divisor, and the difference of the products for a dividend. But if unlike...
Page 108 - Seven gentlemen, who were travelling, met together by chance at a certain inn upon the road, where they were so well pleased with their host, and each other's company, that in a frolic they offered him...
Page 42 - How much t Q. How many Sorts of Proportion are there? A. Two : Direct and Inverse. And so on. We have quoted enough to give an idea of the book.

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