Ray's Modern Practical Arithmetic: A Revised Edition of Ray's Practical Arithmetic

American Book Company, 1903 - Arithmetic - 320 pages

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Contents

 Notation and Numeration 9 Subtraction 30 Division 50 Order of Signs 73 Factoring 120 Fractions 133 Decimal Fractions 165 Metric System 184
 Percentage 200 Interest 220 Exchange 252 Taxes 261 Ratio and Proportion 267 Involution 280 Mensuration 299 Examples for Review 312

Popular passages

Page 288 - Multiply the divisor, thus increased, by the last figure of the root; subtract the product from the dividend, and to the remainder bring down the next period for a new dividend. 5. Double the whole root already found for a new divisor, and continue the operation as before, until all the periods are brought down.
Page 290 - The square described on the hypotenuse of a rightangled triangle is equal to the sum of the squares described on the sides containing the right angle. Prop. 30. — If the square on one side of a triangle is equal to the sum of the squares on the other two sides, the angle contained by these two sides is a right angle.
Page 301 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
Page 178 - 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.
Page 270 - Three quantities are in proportion when the first has the same ratio to the second, that the second has to the third ; and then the middle term is said to be a mean proportional between the other two.
Page 141 - To reduce a fraction to its lowest terms. A Fraction is in its lowest terms when the numerator and denominator are prime to each other.
Page 121 - Two numbers are PRIME TO EACH OTHER when they have no common factor.
Page 308 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Page 291 - A room is 20 ft. long, 16 ft. wide, and 12 ft high. What is the distance from one of the lower corners to the opposite upper corner?
Page 237 - If the payment be less than the interest, the surplus of interest must not be taken to augment the principal; but interest continues on the former principal until the period when the payments, taken together, exceed the interest due, and then the surplus is to be applied towards discharging the principal; and interest is to be Computed on the balance, as aforesaid.