# Mathematics for Common Schools..: Grammar-school arithmetic

D.C. Heath, 1895

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### Περιεχόμενα

 MIXED NUMBERS 201 NOTATION AND NUMERATION 210 FEDERAL MONEY 216 BILLS 238 MEASUREMENTS 246 CHAPTER VI 249 SUBTRACTION OF FRACTIONS 250 MULTIPLICATION OF FRACTIONS 265
 MEASUREMENTS 433 PARTNERSHIP 439 COMPOUND INTEREST 445 LONGITUDE AND TIME 452 CHAPTER XIII 458 RATIO 466 PROPORTION 476 PARTIAL PAYMENTS MERCHANTS RULE 494

 MIXED NUMBERS 266 BILLS 274 DENOMINATE NUMBERS 284 MEASUREMENTS 297 DENOMINATE NUMBERS 307 PERCENTAGE 316 AREAS OF RIGHTANGLED TRIANGLES 322 MEASUREMENTS 342 PERCENTAGE 349 SURFACES 353 ANGLES TRIANGLES QUADRILATERALS 365 CHAPTER XI 381 MEASUREMENTS 389 BANK DISCOUNT 402 COMMERCIAL DISCOUNT 410 SIMPLE INTEREST 415 COMMERCIAL DISCOUNT 421
 MENSURATION OF PLANE SURFACES 503 SURFACES OF SOLIDS 511 CUBE Root 519 METRIC SYSTEM 525 Two UNKNOWN QUANTITIES 538 THREE UNKNOWN QUANTITIES 544 MULTIPLICATION OF ALGEBRAIC QUANTITIES 547 Oral Exercises 552 CHAPTER XVI 557 CALCULATION OF HEIGHTS AND DISTANCES 587 VOLUMES 599 APPENDIX 607 RATES OF INTEREST 610 TAXES 617 293 641 Πνευματικά δικαιώματα

### Δημοφιλή αποσπάσματα

Σελίδα 227 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt.) 4 quarts = 1 gallon (gal...
Σελίδα 606 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes =1 hour (hr.) 24...
Σελίδα 600 - V9 x 25 sq. ft. = 15 sq. ft. NOTE. — The mean proportional between two numbers is equal to the square root of their product. 13. Find the volume of the frustum of a square pyramid, its upper base containing 64 square inches, and its lower base 196 square inches, its altitude being 18 inches. 1294. Note that the mean proportional between 64 and 196 is 8 x 14, or 112. Since each is multiplied by one-third of the altitude, the operation is shortened by adding together the three areas, 64, 196, and...
Σελίδα 605 - Linear Measure 12 inches (in.) = 1 foot (ft.) 3 feet = 1 yard (yd.) 5£ yards = 1 rod (rd.) 320 rods = 1 mile (mi.) Cubic Measure 1728 cubic inches (cu.
Σελίδα 352 - 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. mi.) Cubic Measure 1728 cubic inches (cu.
Σελίδα 453 - Sixty days after sight of this First of Exchange (Second unpaid), pay to the order of John W.
Σελίδα 605 - TROY WEIGHT. 24 grains (gr.) = 1 pennyweight (pwt.). 20 pennyweights = 1 ounce (oz.). 12 ounces = 1 pound (lb.). 351. Apothecaries' weight is used in mixing medicines and in selling them at retail. APOTHECARIES
Σελίδα 359 - The following is the table: 24 grains (gr.) 1 pennyweight (dwt.) 20 pennyweights 1 ounce (oz.) 12 ounces 1 pound (Ib.) The abbreviation for pennyweight is also written pwt. 829. The pound apothecaries' weight — used in putting up prescriptions — contains the same number of grains (5,760) as the pound troy.
Σελίδα 524 - Measures of Length. 10 millimeters (mm.) 1 centimeter (cm.) 10 centimeters 1 decimeter (dm.) 10 decimeters 1 meter (m.) 10 meters 1 dekameter (Dm.) 10 dekameters 1 hectometer (Hm.) 10 hectometers 1 kilometer (Km.) 10 kilometers 1 myriameter (Mm.) 1181.
Σελίδα 354 - What are the dimensions of the box that can be made of a piece of paper of the size shown in the following diagram? How many square inches of paper are needed for such a box (making no allowance for pasting) ? 4 in. 4 in.