# A complete course of oral & mental arithmetic

Groombridge and Sons, 1864 - 76 σελίδες

### Τι λένε οι χρήστες -Σύνταξη κριτικής

Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.

### Περιεχόμενα

 Ενότητα 1 1 Ενότητα 2 3 Ενότητα 3 6
 Ενότητα 4 7 Ενότητα 5 69 Ενότητα 6 74

### Δημοφιλή αποσπάσματα

Σελίδα 33 - OPERATIONS WITH FRACTIONS A) To change a mixed number to an improper fraction, simply multiply the whole number by the denominator of the fraction and add the numerator.
Σελίδα 33 - To reduce an improper fraction to a whole or mixed number, Divide the numerator by the denominator. The quotient will be the whole...
Σελίδα 10 - ... 3 from 3 leaves 0 3 from 4 leaves 1 3 from 5 leaves 2 3 from 6 leaves 3 3 from 7 leaves 4 3 from 8 leaves 5 3 from 9 leaves 6 3 from 10 leaves 7 3 from 11 leaves 8 3 from 12 leaves 9 3 from 13 leaves 10 3 from...
Σελίδα 10 - ... 5 from 5 leaves . 0 5 from 6 leaves 1 5 from 7 leaves 2 5 from 8 leaves 3 5 from 9 leaves 4 5 from 10 leaves 5 5 from 11 leaves 6 5 from 12 leaves 7 5 from 13 leaves 8 5 from 14 leaves 9 5 from 15 leaves 10...
Σελίδα 34 - To multiply fractions together, multiply all the numerators together for the new numerator and all the denominators together for...
Σελίδα 55 - To find what any number of pence per day will amount to in 313 days, which, omitting Sundays, is the number of day
Σελίδα 59 - To find the Interest of any Sum of Money for a Year. RULE. — Multiply the principal by the rate per cent ; that product divided by 100, will give the interest required.
Σελίδα 39 - ... borrower of money makes to the lender. PRINCIPAL, is the sum lent. AMOUNT, is the interest added to the principal. PER CENT., a contraction of per centum, is the rate established by law ; or that which is agreed on by the parties, and is so much for a hundred dollars for one 1 year. GENERAL RULE* Multiply the principal by the rate per cent. and divide by 100, and the quotient is the answer for one year; or, multiply by the per cent.
Σελίδα 50 - RULE. — For every farthing in the price take as many pence, and twice as many shillings. Thus, 100 pencils at 1-Jd. each is 12«.
Σελίδα 34 - A fraction is multiplied by a whole number either by multiplying the numerator, or dividing the denominator by that number.