Arithmetic for the Practical ManD. Van Nostrand, 1931 - 269 σελίδες |
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Σελίδα 4
... indicating " add " and " subtract . " The sign X was used by William Oughtred in England in 1631 to indicate multiplication . The Arabs quite early indicated division in the form of fractions . Following this method one Rahn used the ...
... indicating " add " and " subtract . " The sign X was used by William Oughtred in England in 1631 to indicate multiplication . The Arabs quite early indicated division in the form of fractions . Following this method one Rahn used the ...
Σελίδα 5
... indicated operation or combination of numbers written before it ( on the left ) produces the result or number written after it . Thus 12 + 4 = 16 , 12-4-8 , 12X4 = 48 , 12 ÷ 4 = 3 . The fraction line , a horizontal line with numbers ...
... indicated operation or combination of numbers written before it ( on the left ) produces the result or number written after it . Thus 12 + 4 = 16 , 12-4-8 , 12X4 = 48 , 12 ÷ 4 = 3 . The fraction line , a horizontal line with numbers ...
Σελίδα 150
... indicated by the so - called prime ( first ) mark ( ' ) . Thus 45 minutes ( ° ) of angle is written 45 ' . The minute is again subdivided into 60 equal parts called the second division or simply seconds . Seconds are indicated by the ...
... indicated by the so - called prime ( first ) mark ( ' ) . Thus 45 minutes ( ° ) of angle is written 45 ' . The minute is again subdivided into 60 equal parts called the second division or simply seconds . Seconds are indicated by the ...
Περιεχόμενα
CHAPTER I | 3 |
SUBTRACTION | 10 |
CHAPTER III | 18 |
Πνευματικά δικαιώματα | |
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added amount angle anti-log arithmetical progression bushels calculation called chapter ciphers circle circumference column common difference common fraction common logarithms complete quotient compound number cone cube root cubic curve cylinder decimal fraction decimal number decimal places decimal point degrees denominate number diameter distance divided dollars equal equator equivalent example exponent expressed factors geometrical progression given number graph hypotenuse illustrated inches indicated last figure last term lateral surface latitude length logarithms longitude mantissa means measure method metric system miles minuend multiply number of terms partial dividend periodic rate plane figures poles prime meridian proportion pyramid quotient radius ratio rectangle rectangular solid remainder represent result right triangle side Similarly simple slant height sphere square and cube square root subtracted subtrahend surface area symbols temperature tion unit volume weight whole number write written