A Mental Arithmetic, Upon the Inductive PlanR.S. Davis & Company, 1860 - 156 σελίδες |
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Σελίδα 3
... greater extent than has heretofore been deemed practicable . In the notes , aid is furnished the pupil more by hints and suggestions , than by full and formal solutions , which , if too numerous , might discourage sufficiently ...
... greater extent than has heretofore been deemed practicable . In the notes , aid is furnished the pupil more by hints and suggestions , than by full and formal solutions , which , if too numerous , might discourage sufficiently ...
Σελίδα 22
... greater than 49 is 63 - 13 ? 15. How much greater than 63 is 87 — 22 ? 16. How much more than 40 + 13 is 60 ? 17. How much less than 75 is 35+ 25 ? 18. John found that if he had ` caught 17 fishes more , he should have caught 50 fishes ...
... greater than 49 is 63 - 13 ? 15. How much greater than 63 is 87 — 22 ? 16. How much more than 40 + 13 is 60 ? 17. How much less than 75 is 35+ 25 ? 18. John found that if he had ` caught 17 fishes more , he should have caught 50 fishes ...
Σελίδα 68
... greater than 1 will divide both its numerator and denominator , without a remainder . Dividing the numerator and denomi nator of a fraction by the same number , does not alter the value of the fraction . 52. Reduce and to their lowest ...
... greater than 1 will divide both its numerator and denominator , without a remainder . Dividing the numerator and denomi nator of a fraction by the same number , does not alter the value of the fraction . 52. Reduce and to their lowest ...
Σελίδα 111
... greater is 30 , and the less 25 . 8. Divide 27 into two parts , of which one is of the other . 9. I go into partnership with Thomas Gould , and pay in $ 5 of capital to every $ 4 he pays ; how much more do I pay than he ? How much less ...
... greater is 30 , and the less 25 . 8. Divide 27 into two parts , of which one is of the other . 9. I go into partnership with Thomas Gould , and pay in $ 5 of capital to every $ 4 he pays ; how much more do I pay than he ? How much less ...
Σελίδα 126
... greater is the square of 12 than the square of 11 ? 3. How much greater is the square of 13 than the square of 11 ? 4. If two numbers , whose difference is 1 , have a sum of 27 , what is the difference of their squares ? NOTE . The ...
... greater is the square of 12 than the square of 11 ? 3. How much greater is the square of 13 than the square of 11 ? 4. If two numbers , whose difference is 1 , have a sum of 27 , what is the difference of their squares ? NOTE . The ...
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12 cents 12 days 12 dollars 20 per cent 40 dollars 50 cents 9 cents 9 dollars acres amount barrel of flour bought boys bushels of corn bushels of wheat cents a dozen cents a pound cents a quart cents a yard cents apiece contained cords of wood cows cubic feet decimal fraction denominator dimes dollar a bushel dollars a yard earn eight equal equivalent mixed factors fifths fourths furlongs gain gallons gave give hogshead horse hundred hundred-weight improper fraction interest of $100 John less LESSON lowest terms MENTAL ARITHMETIC merator miles an hour mixed number molasses months Multiply nator NOTE oranges ounces paid pecks pence pennyweights pine-apple pints pounds of sugar present worth prime number quarters quire rate per cent receive Reduce remainder sell sevenths sheep shillings sixths square rods subtract tens third weeks whole number yards of broadcloth yards of cloth
Δημοφιλή αποσπάσματα
Σελίδα 28 - If two men start from the same place, and travel in opposite directions, the one travelling at the rate of 3 miles an hour, and the other at the rate of 4 miles an hour, how far apart will they be at the end of 5 hours ? 11.
Σελίδα 122 - Multiplication is the process of taking one number as many times as there are units in another number.
Σελίδα 55 - NUMBERS. 12 units = 1 dozen. 12 dozen — 1 gross. 12 gross = 1 great gross. 20 units = 1 score.
Σελίδα 50 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30j square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Σελίδα 46 - 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 53 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Σελίδα 47 - AVOIRDUPOIS WEIGHT. 16 Drams (dr.) make 1 Ounce, oz. 16 Ounces " 1 Pound, Ib. 25 Pounds " 1 Quarter, qr. 4 Quarters " 1 Hundred-weight, cwt. 20 Hundred-weight
Σελίδα 114 - A cistern has 4 pipes ; the first will fill it in 2 hours, the second will fill it in 3 hours, the third in 4 hours, and the fourth will empty it in 2 hours ; now, if the pipes are all open at the same time, how long •will it take to fill the cistern ? 10.
Σελίδα 66 - When the numerator is less than the denominator, the fraction is called a proper fraction ; when the numerator is equal to or larger than the denominator, the fraction is called an improper fraction ; when a fraction is joined with a whole number, the expression is called a mixed number.