A Mental Arithmetic, Upon the Inductive PlanR.S. Davis & Company, 1860 - 156 σελίδες |
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Σελίδα 60
... tenths ? 42. 64 is how many times 9 ? 43. 78 is how many times 8 ? 44. 93 is how many times 10 ? 45. 100 is how many times 11 ? 46. 105 is how many times 12 ? 47. Edward has 48 walnuts , and Alfred has 5 eighths as many ; how many has ...
... tenths ? 42. 64 is how many times 9 ? 43. 78 is how many times 8 ? 44. 93 is how many times 10 ? 45. 100 is how many times 11 ? 46. 105 is how many times 12 ? 47. Edward has 48 walnuts , and Alfred has 5 eighths as many ; how many has ...
Σελίδα 61
... tenth of what number ? 6 is 3 fourths of what number ? 12 is 2 fifths of what number ? 8 . 9 . 10 . 11 . 8 is 4 fifths of ... tenths of what number ? 15. 20 is 4 fifths of what number ? 16. 24 is 6 eighths of what number ? 17. 30 is 3 ...
... tenth of what number ? 6 is 3 fourths of what number ? 12 is 2 fifths of what number ? 8 . 9 . 10 . 11 . 8 is 4 fifths of ... tenths of what number ? 15. 20 is 4 fifths of what number ? 16. 24 is 6 eighths of what number ? 17. 30 is 3 ...
Σελίδα 62
Benjamin Greenleaf. 35 . 36 . 36 is 1 tenth of 20 times what number ? 5 eighths of 32 are how many times 5 ? 37 . 6 eighths of 48 are how many times 12 ? 38. 7 ninths of 54 are how many times 6 ? 39. 4 tenths of 70 are how many times 7 ...
Benjamin Greenleaf. 35 . 36 . 36 is 1 tenth of 20 times what number ? 5 eighths of 32 are how many times 5 ? 37 . 6 eighths of 48 are how many times 12 ? 38. 7 ninths of 54 are how many times 6 ? 39. 4 tenths of 70 are how many times 7 ...
Σελίδα 64
... tenths of a pound of raisins ? 18. At 18 cents a pound , what cost 8 pounds and 5 ninths of a pound of butter ? 19 ... tenth of a barrel cost 9 dimes ? 21. John has 20 cents , which is 4 fifths of 5 times as many as Joseph has ; how many ...
... tenths of a pound of raisins ? 18. At 18 cents a pound , what cost 8 pounds and 5 ninths of a pound of butter ? 19 ... tenth of a barrel cost 9 dimes ? 21. John has 20 cents , which is 4 fifths of 5 times as many as Joseph has ; how many ...
Σελίδα 66
... tenths of the number in the second class , and the number in the second class is equal to 6 fifths of 2 times the number in the third class ; how many are there in each of the classes ? LESSON XXIX . Such expressions as one half , one ...
... tenths of the number in the second class , and the number in the second class is equal to 6 fifths of 2 times the number in the third class ; how many are there in each of the classes ? LESSON XXIX . Such expressions as one half , one ...
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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.