A New System of Mental Arithmetic ...Author, and published, 1837 - 173 σελίδες |
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Σελίδα 3
... equal to 10 minus 1 , consequently the right hand figure of each pro- duct in succession is diminished by 1 , and ... equal distances ; for 9 times 1 is 9 , or 09 ; and 9 times 10 is 90 ; again , 9 times 2 is 18 ; and 9 times 9 is 81 ...
... equal to 10 minus 1 , consequently the right hand figure of each pro- duct in succession is diminished by 1 , and ... equal distances ; for 9 times 1 is 9 , or 09 ; and 9 times 10 is 90 ; again , 9 times 2 is 18 ; and 9 times 9 is 81 ...
Σελίδα 7
... equal to one of the others , reject them , place the remaining denominators in a line , and divide by any figure that will divide two or more of them without a remainder ; repeat this process ( if necessary ) till no two can be divided ...
... equal to one of the others , reject them , place the remaining denominators in a line , and divide by any figure that will divide two or more of them without a remainder ; repeat this process ( if necessary ) till no two can be divided ...
Σελίδα 8
... equal to 45 ; and by rejecting 5 and 9 , we have their substitute remaining , namely , the 45 to be brought down , and it stands thus : 4 ) 4 8 45 As there are now no two figures in the 1 2 45 } quotient left that can be divided , the ...
... equal to 45 ; and by rejecting 5 and 9 , we have their substitute remaining , namely , the 45 to be brought down , and it stands thus : 4 ) 4 8 45 As there are now no two figures in the 1 2 45 } quotient left that can be divided , the ...
Σελίδα 9
... equal to 11 or 23 halfpence . When the denominator is an aliquot part of money , weights , or measures , they may very well be answered mentally , by asking this question , " What is the of a £ . ? " The answer will be one halfpenny ...
... equal to 11 or 23 halfpence . When the denominator is an aliquot part of money , weights , or measures , they may very well be answered mentally , by asking this question , " What is the of a £ . ? " The answer will be one halfpenny ...
Σελίδα 13
... equal to £ 77 . From this case much entertaining information may be derived . I shall propose one line for the multiplication and the other for the division of the terms of the fraction . * Reduce 3s . 4 d . to the fraction of a ...
... equal to £ 77 . From this case much entertaining information may be derived . I shall propose one line for the multiplication and the other for the division of the terms of the fraction . * Reduce 3s . 4 d . to the fraction of a ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
12 per cent acres aliquot annexed annum answered mentally barley corns brought to farthings ciphers compound interest consequently cost price cube root deducted denominator difference dividend DIVISIONAL PROCESSES divisor doubling the right drams dwts ell English equal figure and fraction find the product find the value gain per cent gallons given number grains highest number hundreds last right hand left hand figure lowest terms mental calculation minutes multiplicand Multiply the given namely number of digits number of farthings number of figures number of months number of pounds number of shillings numeration table observe the following ounces pounds sterling principal put proceed put to interest quantity quotient rate per cent reader reduce remainder right hand figure selling price shews shillings and pence subtract Suppose tenpences three figures three left hand three right hand tons troy vulgar fraction weeks whole number yard cost yards of cloth
Δημοφιλή αποσπάσματα
Σελίδα 161 - Time, in advance, behind him hides his wings, And seems to creep, decrepit with his age ; Behold him, when past by ; what then is seen, But his broad pinions swifter than the winds ? And all mankind, in contradiction strong, Rueful, aghast ! cry out on his career.
Σελίδα 21 - Divide the numerator of the dividend by the numerator of the divisor.
Σελίδα 135 - If the price be an even number of shillings under 20 — multiply the quantity by half the number, doubling the first figure of the product for shillings, and the rest will be pounds.
Σελίδα 1 - ... and is called the denominator. The number above the line is called the numerator, because by it we enumerate, or express the number of parts taken.
Σελίδα 18 - Hence the BANK RULE. Multiply the principal by the number of days, and divide by 6000 ; the quotient will be the interest at 6 per cent. For any other rate than 6 per cent., compute the interest in the same manner, and add or subtract such part as may be required. For 4 per cent. subtract j ; for 4i per cent. subtract J ; for 5 per cent. subtract J ; for 7 per cent. add...
Σελίδα 153 - How often will the wheel of a coach, that is 17 feet in circumference, turn in 100 miles? Ans.
Σελίδα 31 - Cambric, which cost me 90/ but some Damage having happened to it, I am willing to lose...
Σελίδα 12 - RULE. Reduce the given Quantity to the lowest Name mentioned, for a Numerator ; under which put the Number of those Parts contained in an Unit of the Integer for a Denominator, then reduce the Fraaion to its lowest Terms.
Σελίδα 32 - If § of a yard cost § of a £, what will J of a yard cost? A
Σελίδα 55 - ... the amount, from which subtract the principal and the remainder will be the compound interest.