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

Sower, Barnes & Company, 1860 - 324 σελίδες

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Περιεχόμενα

 Notation and Numeration 7 Addition Mental Exercises 16 Suetraction Mental Exercises 25 Multiplication Mental Exercises 33 Division Mental Exercises 44 Fractions 57 Miscellaneous Examples involving 65 Reduction 82
 Percentage 194 Compound Interest 212 Commission Broberage and Stocbs 218 Insurance 224 Equation op Payments 230 Ratio 237 Currencies 258 Duodecimal? 266

Δημοφιλή αποσπάσματα

Σελίδα 136 - Multiply the numerators together for a new numerator, and the denominators together for a new denominator.
Σελίδα 96 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt...
Σελίδα 187 - But if any payments be made before one year's interest hath accrued, then compute the interest on the principal sum due on the obligation for one year,* add it to the principal, and compute the interest on the sum paid from the time it was paid up to the end of the year ; add it to the sum paid, and deduct that sum from the principal and interest added together.
Σελίδα 167 - When a decimal number is to be divided by 10, 100, 1000, &c., remove the decimal point as many places to the left as there are ciphers in the divisor, and if there be not figures enough in the number, prefix ciphers.
Σελίδα 165 - To multiply a decimal by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier ; and if there be not places enough in the number, annex ciphers.
Σελίδα 187 - 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 114 - The greatest common divisor of two or more numbers is the greatest number "that will divide each of them without a remainder. Thus 6 is the greatest common divisor of 12, 18, and 24.
Σελίδα 275 - If the first term is 18, the ratio 1.06, and the number of terms 4, what is the sum of the series ? 6.
Σελίδα 116 - The least common multiple 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.
Σελίδα 252 - The square of the sum of two numbers is equal to the square of the first number plus twice the product of the first and second number plus the square of the second number.