# Introduction to The National Arithmetic: On the Inductive System Combining the Analytic and Synthetic Methods in which the Principles of the Science are Fully Explained and Illustrated ; Designed for Common Schools and Academies

Robert S. Davis, 1850 - 324 σελίδες

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### Περιεχόμενα

 ApprºtonMental Exercises 6 SUBTRACTIONMental Exercises 26 MultiplicationMental Exercises 34 Division Mental Exercises 46 CoNTRActions IN MULTIPLICATION 59 UNITED STATEs Money 67 Questions Involving FRAcrions 79 Apothecaries Weight Table 88
 110 210 Compound INTEREsr 212 BANK Discount 220 111 225 Insurance 226 114 234 125 249 DUopecmALs 258

 tion 107 A Prime Factor 134 F sº XIX Equation of PAYMENTs 232 140 Reduction of Fractions of Compound 170 101 174 Questions to be performed by Analy 176 REDUCTION of CURRENCIEs 193 107 200
 ARITHMETICAL PROGREssion 279 GEOMETRICAL PROGRESSION 286 129 291 ALLIGATION 292 MENsukATION of SURFACEs 298 MENSURATION of SolIDs 304 WRights MEAsures AND Money 310 134 316

### Δημοφιλή αποσπάσματα

Σελίδα 257 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Σελίδα 264 - Multiply the divisor, thus augmented, by the last figure of the root, and subtract the product from the dividend, and to the remainder bring down the next period for a new dividend.
Σελίδα 288 - Ans. 75 square feet. 2. What is the difference between the contents of two floors ; one is 37 feet long and 27 feet wide, and the other is 40 feet long and 20 feet wide ? Ans. 199 square feet.
Σελίδα 265 - A sphere is a solid, bounded by one continued convex surface, every point of which is equally distant from a point within, called the centre.
Σελίδα 254 - Find the greatest square number in the first or left hand period, place the root of it at the right hand of the given number, (after the manner of a quotient in division...
Σελίδα 128 - An improper fraction is one whose numerator is equal to, or greater than its denominator ; as, \$, -f . A mixed number is a whole number and a fraction expressed together; as, 4f, 25-ht.
Σελίδα 199 - Compute the interest to the time of the first payment; if that be one year or more from the time the interest commenced, add it to the principal, and deduct the payment from the sum total. If there be...
Σελίδα 294 - To find the solidity of a cylinder. RULE. — Multiply the area of the base by the altitude, and the product will be the solidity.
Σελίδα 267 - ... series. The numbers which form the series are called the terms of the series. The first and last terms are the extremes, and the other terms are called the means.
Σελίδα 126 - Mnltiple of two or more numbers is the least number that can be divided by each of them without a remainder ; thus 30 is the least common multiple of 10 and 15.