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### Περιεχόμενα

 Notation and Numeration 1 Addition 11 Subtraction 20 Multiplication 27 Division 38 Review 49 Common Fractions 63 Review 91
 Interest 181 Discount 203 Stock Investments 212 Foreign Exchange 219 Review 225 Mensuration 256 Appendix 308 Longitude and Time 314

 United States Money 106 Weights and Measures 116 Compound Numbers 126 Measurements 151
 Average of Accounts 321 Answers to Examples 347 Πνευματικά δικαιώματα

### Δημοφιλή αποσπάσματα

Σελίδα 119 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Σελίδα 118 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30£ square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Σελίδα 47 - If 2 men start from the same place and travel in opposite directions, one at the rate of 4...
Σελίδα 223 - RULE. — Multiply each debt by its term of credit, and divide the sum of the products by the sum of the debts. The quotient will be the average term of credit.
Σελίδα 164 - How many yards of carpeting f yd. wide will be required for a parlor 28 ft. by 15 ft. ? 62. How many cubic yards of earth will be required to raise the surface of an acre one foot ? 63. A brick is 8 in. long, 4 in. wide, and 2 in. thick. How many will be required to lay J mile of 8-foot sidewalk, the bricks being laid flat ? 64.
Σελίδα 119 - Cubic Measure 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Σελίδα 121 - Time is a measured portion of duration. TABLE. 60 seconds (sec.) are 1 minute, min. 60 minutes " 1 hour, h. 24 hours " 1 day, d. 365 days '•
Σελίδα 1 - A number is a unit or a collection of units; as one, three apples, five boys. 4. The unit of a number is one of the collection of units which constitutes the number. Thus, the unit of twelve is one, of twenty dollars is one dollar.
Σελίδα 123 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the center.
Σελίδα 262 - Sphere is a body bounded by a uniformly curved surface, all the points of which are equally distant from a point within called the center.