# Mental and Practical Arithmetic: Designed for the Use of Academies and Schools

Alfred S. Barnes, 1838 - 288 σελίδες

### Τι λένε οι χρήστες -Σύνταξη κριτικής

Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.

### Περιεχόμενα

 Mental Arithmetic 7 Numeration and Notation 21 Subtraction of Simple Numbers 35 Division of Simple Numbers 53 Of Fractions 70 Division of Federal Money 84 Addition of Denominate Numbers 111 Of Vulgar Fractions 128
 Division of Vulgar Fractions 160 Decimal Fractions 164 Reduction of Vulgar Fractions to Decimals 178 Reduction of Currencies as 197 Compound Interest 219 Duodecimals 233 Extraction of the Cube Root 248 248 Promiscuous Questions 966 266

 Reduction of Denominate Fractions 147
 BookKeeping 281

### Δημοφιλή αποσπάσματα

Σελίδα 272 - ... then the above obligation to be void ; otherwise to remain in full force and virtue.
Σελίδα 272 - THE CONDITION of the above obligation is such, that if the above bounden James Wilson, his heirs, executors, or administrators, shall well and truly pay or cause to be paid, unto the above named John Pickens, his executors, administrators, or assigns, the just and full sum of Here insert the condition.
Σελίδα 209 - We shall now give the rule established in New York (see Johnson's Chancery Reports, vol. i., page 17,) for computing the interest on a bond or note, when partial payments have been made. The same rule is also adopted in Massachusetts, and in most of the other States.
Σελίδα 22 - Los números cardinales 0: zero 1: one 2: two 3: three 4: four 5: five 6: six 7: seven 8: eight 9: nine 10: ten 11: eleven 12: twelve 13: thirteen 14: fourteen 15: fifteen 16: sixteen 17: seventeen 18: eighteen 19: nineteen 20: twenty...
Σελίδα 140 - To reduce a mixed number to an improper fraction, — RULE : Multiply the whole number by the denominator of the fraction, to the product add the numerator, and write the result over the denominator.
Σελίδα 34 - January 31, February 28, March 31, April 30, May 31, June 30, July 31, August 31, September 30, October 31, November 30, December 31.
Σελίδα 45 - We have seen that multiplying by a whole number is taking the multiplicand as many times as there are units in the multiplier.
Σελίδα 261 - If 20 men can perform a piece of work in 12 days, how many men will accomplish three times as much in one-fifth of the time ? Ans.
Σελίδα 108 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...
Σελίδα 136 - Divide the greater number by the less, and then divide the divisor by the remainder, and continue to divide the last divisor by the last remainder until nothing remains. The last divisor will be the greatest common divisor sought.