A Mental Arithmetic, Upon the Inductive PlanR.S. Davis & Company, 1860 - 156 σελίδες |
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Σελίδα 44
... rods in 5 minutes , and Jason the same distance in 4 minutes ; how long will it take Jason to gain 30 rods on William ? 33. Three men buy a horse , A paying 12 dol- lars , B twice as many lacking 4 dollars , and C twice as many as both ...
... rods in 5 minutes , and Jason the same distance in 4 minutes ; how long will it take Jason to gain 30 rods on William ? 33. Three men buy a horse , A paying 12 dol- lars , B twice as many lacking 4 dollars , and C twice as many as both ...
Σελίδα 48
... Rod or Pole , rd . 40 Rods 1 Furlong , fur . 9 Furlongs , or 320 rods , 66 1 Mile , m . << 3 Miles 1 League , 691 Miles ( nearly ) 66 1 Degree , lea . deg . or " . 360 Degrees 66 1 Circle of the Earth . NOTE . This measure is used in ...
... Rod or Pole , rd . 40 Rods 1 Furlong , fur . 9 Furlongs , or 320 rods , 66 1 Mile , m . << 3 Miles 1 League , 691 Miles ( nearly ) 66 1 Degree , lea . deg . or " . 360 Degrees 66 1 Circle of the Earth . NOTE . This measure is used in ...
Σελίδα 49
... rods ? In 120 rods ? In 160 rods ? 7. How many furlongs in 1 mile ? In 3 miles ? In 10 miles ? In 12 miles ? 8. How many miles in 16 furlongs ? In 24 fur- longs ? In 40 furlongs ? In 96 furlongs ? 9. How many miles in 3 leagues ? In 8 ...
... rods ? In 120 rods ? In 160 rods ? 7. How many furlongs in 1 mile ? In 3 miles ? In 10 miles ? In 12 miles ? 8. How many miles in 16 furlongs ? In 24 fur- longs ? In 40 furlongs ? In 96 furlongs ? 9. How many miles in 3 leagues ? In 8 ...
Σελίδα 50
... rods 66 1 Rood , R. 4 Roods 66 1 Acre , A. 66 1 Square mile , S. M. 640 Acres NOTE . kinds . - This measure is used ... rods in 1 rood ? In 3 roods ? In 7 roods ? 4. How many roods in 80 square rods ? In 120 square rods ? In 160 square ...
... rods 66 1 Rood , R. 4 Roods 66 1 Acre , A. 66 1 Square mile , S. M. 640 Acres NOTE . kinds . - This measure is used ... rods in 1 rood ? In 3 roods ? In 7 roods ? 4. How many roods in 80 square rods ? In 120 square rods ? In 160 square ...
Σελίδα 51
... rods in a field 12 rods long , and 9 rods wide ? 9. At 5 dollars for 1 square rod , what cost 1 acre of land ? 10. In 1A . 2R . 20p . are how many square rods ? TABLE OF CUBIC , OR SOLID MEASURE . 1728 Cubic inches ( cu . in . ) make 1 ...
... rods in a field 12 rods long , and 9 rods wide ? 9. At 5 dollars for 1 square rod , what cost 1 acre of land ? 10. In 1A . 2R . 20p . are how many square rods ? TABLE OF CUBIC , OR SOLID MEASURE . 1728 Cubic inches ( cu . in . ) make 1 ...
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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.