A New System of Mental Arithmetic ...Author, and published, 1837 - 173 σελίδες |
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Σελίδα 9
... Answer , of a £ . Here multiply the terms of the above fraction by 48 , and we have . And ÷ 40 . of the £ . answer . That ... answered mentally , by asking this question , " What is the of a £ . ? " The answer will be one halfpenny ; and ...
... Answer , of a £ . Here multiply the terms of the above fraction by 48 , and we have . And ÷ 40 . of the £ . answer . That ... answered mentally , by asking this question , " What is the of a £ . ? " The answer will be one halfpenny ; and ...
Σελίδα 12
... answer , if correct , will be 19s . 91⁄2d .; and , on the contrary , to ... answered without the aid of pen or pencil : What is the value of of a Guinea ... mentally . The reader should always make it a rule to notice the denominator ...
... answer , if correct , will be 19s . 91⁄2d .; and , on the contrary , to ... answered without the aid of pen or pencil : What is the value of of a Guinea ... mentally . The reader should always make it a rule to notice the denominator ...
Σελίδα 17
... mental calculations , which may either have escaped my notice , or which I have not inserted in order to prevent this work from being unnecessarily large . Questions in interest may often be answered mentally ; for example , What is the ...
... mental calculations , which may either have escaped my notice , or which I have not inserted in order to prevent this work from being unnecessarily large . Questions in interest may often be answered mentally ; for example , What is the ...
Σελίδα 31
... Answer , 6s . 11¿d . The above question being admirably fitted for mental cal- culation , it may be proper here to explain the method . First . From 300 yards deduct its , i . e . 60 , to reduce them to ells English , and we have 240 ...
... Answer , 6s . 11¿d . The above question being admirably fitted for mental cal- culation , it may be proper here to explain the method . First . From 300 yards deduct its , i . e . 60 , to reduce them to ells English , and we have 240 ...
Σελίδα 36
... answer in shillings is obtained . If the quantity has fractional parts , let the quantity with the fractional parts be converted ... answered mentally ; thus , if it is asked how much is 96 times 19s . 9d . ? Here 19s . 9 d . = 3 % of a ...
... answer in shillings is obtained . If the quantity has fractional parts , let the quantity with the fractional parts be converted ... answered mentally ; thus , if it is asked how much is 96 times 19s . 9d . ? Here 19s . 9 d . = 3 % 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.