# Easy Introduction to Mathematics, Τόμος 1

Barlett & Newman, 1814

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### Περιεχόμενα

 PAGE ix ARITHMETIC xvi HISTORICAL INTRODUCTION 1 WHOLE NUMBERS 15 Division 21 ibid 29 Tables of MONEY 33 WEIGHTS 51
 Addition 212 Subtraction 213 Multiplication 214 Contracted 216 Division 218 Contracted 220 Reduction 224 Proportion Direct and Inverse 229

 MEASURES 61 COMPOUND Rules Addition 73 ibid 77 Coal 85 Goods sold by Tale 91 Multiplication 93 Division 103 PROPORTION Direct 115 Compound 126 PRACTICE 129 VULGAR FRACTIONS Notation 146 Reduction 148 5 155 Subtraction 182 Multiplication 191 Division 197 Proportion Direct and Inverse 203 Compound 207 DECIMALS Notation 209
 Compound 231 CIRCULATING DECIMALS Notation and Definitions 232 Reduction 233 Addition 237 Subtraction 239 Multiplication 240 Division 241 DUODECIMALS 242 INVOLUTION 216 246 EVOLUTION 249 PROGRESSION 263 LOGARITHMS 273 LOGARITHMICAL ARITHMETIC 299 HISTORICAL INTRODUCTION 316 SURDS 325 REDUCTION OF Şimple EQUATIONS 408 REDUCTION OF AFFECTED QUADRATICS 435 PROBLEMS 443

### Δημοφιλή αποσπάσματα

Σελίδα xxii - Just so it is in the mind; would you have a man reason well, you must use him to it betimes, exercise his mind in observing the connection of ideas and following them in train. Nothing does this better than mathematics, which therefore I think should be taught all those who have the time and opportunity, not so much to make them mathematicians as to make them reasonable creatures...
Σελίδα 48 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt...
Σελίδα 98 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.
Σελίδα 42 - AVOIRDUPOIS WEIGHT. 16 drams, dr. make 1 ounce, - - - - oz. 16 ounces - - - 1 pound, - - - - Ib. 28 pounds - - - 1 quarter, - - - qr. 4 quarters - - - 1 hundred weight, - cwt. 20 hundred weight, 1 ton, T.
Σελίδα 448 - What number is that, which, being divided by the product of its digits, the quotient is 3 ; and if 18 be added to it, the digits will be inverted ? Ans.
Σελίδα 54 - M. 60 minutes, 1 hour, h. 24 hours, 1 day, d. 7 days, . 1 week, w. 4 weeks, 1 month, mo. 13 months, 1 day and 6 hours, 1 Julian year, yr. Thirty days hath September, April, June and November ; February twenty-eight alone, all the rest have thirtyone.
Σελίδα 106 - State and reduce the terms as in the Rule of Three Direct. 2. Multiply the first and second terms together, and divide the product by the third ; the quotient will be the answer in the same denomination as the middle term was reduced into.
Σελίδα 234 - ... and to the remainder bring down the next period for a dividend. 3. Place the double of the root already found, on the left hand of the dividend for a divisor. 4. Seek how often the divisor is contained...
Σελίδα 432 - A hare is 50 leaps before a greyhound, and takes 4 leaps to- the greyhound's 3, but 2 of the greyhound's leaps are as much as 3 of the hare's ; how many leaps must the greyhound take to catch the hare ? Ans. 300.
Σελίδα 138 - To reduce a whole number to an equivalent fraction, having a given denominator. RULE. Multiply the whole number by the given denominator, and place the product over the said denominator, and it will form the fraction required.