# Practical and Mental Arithmetic: On a New Plan, in which Mental Arithmetic is Combined with the Use of the Slate ...

Richardson, Lord and Holbrook, 1830

### Περιεχόμενα

 Page 4 Subtraction 9 Division 15 Simple Addition 26 Simple Subtraction 33 Simple Division 43 Questions on the foregoing 51 Addition of Federal Money 57
 Questions on the foregoing 152 63 159 Time Rate per cent and Interest being given to find the Principal 166 Equation of Payments 172 66 186 Application of Ratio by Rule 187 89 196 Barter ex 2231 209

### Δημοφιλή αποσπάσματα

Σελίδα 21 - Decedents," and to repeal said original sections, -and to repeal sections one (1), two (2), three (3), four (4), five (5), six (6), seven...
Σελίδα 245 - Hence, when the extremes and number of terms are given, to find the common difference, — Divide the difference of the extremes by the number of terms, less 1, and the quotient will be the common difference.
Σελίδα 199 - 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 53 - TABLE. 10 Mills (m.) = 1 Cent . . ct. 10 Cents = 1 Dime . . d. 10 Dimes = 1 Dollar . \$. 10 Dollars = 1 Eagle . E.
Σελίδα 173 - Bought 40 gallons of molasses, at 27 cents a gallon ; but, by accident, 4 gallons leaked out ; at what rate must I sell the remainder, per gallon, to lose nothing?
Σελίδα 242 - 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 76 - In 2 ? In 3 ? In 4? In 5? In 6? In 7? In 8? In 9? In 10? In 11 ? 5.
Σελίδα 255 - Two persons, A and B, have the same income: A saves |- of his yearly ; but B, by spending \$150 per annum more than A, at the end of 8 years, finds himself \$400 in*debt ; what is their income, and what does each spend per annum '? A.
Σελίδα 172 - B \$200, to be paid in 6 months ; \$300, in 12 months ; \$500, in 3 months ; what is the equated time for the payment of the whole?
Σελίδα 197 - ... due: add that interest to the principal, and from the sum subtract the payment made at that time, together with the preceding payments (if any) and the remainder forms a new principal ; on which, compute and subtract the interest, as upon the first principal: and proceed in this manner to the time of the judgment.