Principles of ArithmeticDeighton, 1885 - 220 pages |
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Page 6
... obtained in this way would often be very long , but they can be shortened by the use of multiplication , for the numbers added to- gether may be made for the most part equal , and the addition of equal numbers is multiplication . For ...
... obtained in this way would often be very long , but they can be shortened by the use of multiplication , for the numbers added to- gether may be made for the most part equal , and the addition of equal numbers is multiplication . For ...
Page 7
... obtain the last two numbers and adding any other num- bers such as nine and eight together would be superfluous , since we should merely be giving names to numbers already expressed . We can obtain ten more numbers by adding one , two ...
... obtain the last two numbers and adding any other num- bers such as nine and eight together would be superfluous , since we should merely be giving names to numbers already expressed . We can obtain ten more numbers by adding one , two ...
Page 30
... obtain right results is clear ; for adding 3 to 5 is the same as counting 3 numbers on from 5. Now in the 5th row we begin counting numbers on from 5 , namely 6 , 7 , 8 , & c . , and when we reach the 3rd column we have counted 3 ...
... obtain right results is clear ; for adding 3 to 5 is the same as counting 3 numbers on from 5. Now in the 5th row we begin counting numbers on from 5 , namely 6 , 7 , 8 , & c . , and when we reach the 3rd column we have counted 3 ...
Page 35
... obtain XXXIIIIIII . We will now see how subtraction is performed in our modern notation . We will take 2849 from 7561. We write the numbers thus ; 7561 2849 4712 and say , nine from eleven leaves two , forty from fifty leaves ten ...
... obtain XXXIIIIIII . We will now see how subtraction is performed in our modern notation . We will take 2849 from 7561. We write the numbers thus ; 7561 2849 4712 and say , nine from eleven leaves two , forty from fifty leaves ten ...
Page 36
... obtained from the addition table . To find the difference of 15 and 6 we look along the 6th row till we come to 15 ; we then look up the column in which 15 is and find 9 , the difference required . There is another slightly different ...
... obtained from the addition table . To find the difference of 15 and 6 we look along the 6th row till we come to 15 ; we then look up the column in which 15 is and find 9 , the difference required . There is another slightly different ...
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Common terms and phrases
2nd Edition 4th Edition addition arithmetical bers centimetres consecutive numbers contain Crown 8vo cube decimal fractions decimal places decimetre difference divisible by 9 divisors English equal number example F. A. Paley Fcap figures find the number finding the G.C.M. five four numbers fourth geometrical geometrical progression George Bell given number greater Greek Hence hundred hundredths Latin least common multiple length M.A. 3rd Edition means millimetres multiply Nicomachus of Gerasa notation number divisible number of combinations number of objects number of permutations number of variations number which divides numbers is equal obtain odd numbers perfect number place further places of decimals Post 8vo prime factors prime numbers prove pyramidal number quotient ratio remainder second number seven shew square inches square root subtract suppose symbols tens tenths thousand thousandths three numbers tion triangular number unaltered unit of measure vulgar fraction whole number words ΙΟ
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