Dubbs' Complete Mental Arithmetic: A Volume of Carefully Graded Exercises Adapted to the Use of All SchoolsAmerican Book Company, 1893 - 220 páginas "First edition of Dubbs' work on mental arithmetic. The author states in the preface that this subject is the most important that has been taught in the schools because it develops the reasoning faculties quicker than the study of any other discipline. The work consists of a series of problems in the various subjects of primary mathematics, including the basic sections, fractions, interest, discounts and percentages, among others. These are 'carefully graded exercises adapted to the use of all schools.' All to be accomplished without pencil or paper!" -- Antiquarian bookseller's description, 2018. |
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Página 4
... box , and 2 in another . How many bars are in both ? II . Julia is 3 years old . What will be her age in 3 years more ? 12 . Edward recited 4 lessons in the morning , and 3 in the afternoon . How many lessons did he recite alto- gether ...
... box , and 2 in another . How many bars are in both ? II . Julia is 3 years old . What will be her age in 3 years more ? 12 . Edward recited 4 lessons in the morning , and 3 in the afternoon . How many lessons did he recite alto- gether ...
Página 23
... . How many bushels of peaches were required ? 13. A merchant bought 8 boxes of starch , each con- taining 12 packages . What was the total number of packages ? 14. A vessel containing 7 gallons was emptied 9 times MULTIPLICATION . 23.
... . How many bushels of peaches were required ? 13. A merchant bought 8 boxes of starch , each con- taining 12 packages . What was the total number of packages ? 14. A vessel containing 7 gallons was emptied 9 times MULTIPLICATION . 23.
Página 24
... boxes of tobacco at 8 dollars a box . 31. 28 cords of wood at 5 dollars a cord . 32. 32 pairs of lace curtains at 9 dollars a pair . 33. 39 hogs at 7 dollars a head . 34. 47 gross of crayons at 12 cents a gross . 35. 6 silver watches at ...
... boxes of tobacco at 8 dollars a box . 31. 28 cords of wood at 5 dollars a cord . 32. 32 pairs of lace curtains at 9 dollars a pair . 33. 39 hogs at 7 dollars a head . 34. 47 gross of crayons at 12 cents a gross . 35. 6 silver watches at ...
Página 32
... boxes , each holding 9 dozen , how many boxes would be required ? 14. Paid 63 dollars for flour , at 7 dollars a barrel . How many barrels were bought ? 15. 96 sheep were exchanged for cows , allowing 1 cow for 8 sheep . How many cows ...
... boxes , each holding 9 dozen , how many boxes would be required ? 14. Paid 63 dollars for flour , at 7 dollars a barrel . How many barrels were bought ? 15. 96 sheep were exchanged for cows , allowing 1 cow for 8 sheep . How many cows ...
Página 34
... boxes were packed with 100 pounds of candy . How many pounds were in each box ? IO . Twelve suits of clothes were ... boxes , how many bars would one box hold ? 25. Six men built 450 rods of fence . rods 34 COMPLETE MENTAL ARITHMETIĆ .
... boxes were packed with 100 pounds of candy . How many pounds were in each box ? IO . Twelve suits of clothes were ... boxes , how many bars would one box hold ? 25. Six men built 450 rods of fence . rods 34 COMPLETE MENTAL ARITHMETIĆ .
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Dubbs' Complete Mental Arithmetic: A Volume of Carefully Graded Exercises ... Eugene L Dubbs Sin vista previa disponible - 2016 |
Términos y frases comunes
12 rods 15 cents 50 cents 9 mo A's money acres acres of land amount Answer apiece apple trees barrels of flour boys buggy bushels of wheat cents a bushel cents a pound certain number cider commission contained cords of wood cows cube root discount divided dividend divisor dollars Dubbs earn equal farmer sold feet Find the cost fraction gain percent gallons hogs horse cost horses eat hundredweight insured least common multiple less LESSON lost marbles marked price midnight miles an hour Multiply muslin ounces oxen paid past noon pecks pennyweights piece pints plums principal quarts quires received Reduce remainder rods of fence selling price shares Sold 15 Solution square root Subtract thereby losing tons of hay turkeys twice watch weeks weigh wheat yards of cloth
Pasajes populares
Página 201 - The Present Worth of a debt payable at a future time without interest is such a sum as, being on interest for the time at a certain rate, will amount to the debt.
Página 207 - The square of the sum of two numbers is equal to the square of the first, plus twice the product of the first by the second, plus the square of the second.
Página 108 - TABLE. 10 Mills (m.) = 1 Cent . . ct. 10 Cents = 1 Dime . . d. 10 Dimes = 1 Dollar . $. 10 Dollars = 1 Eagle . E.
Página 114 - Length 12 inches (in.) = 1 foot (ft.) 3 feet = 1 yard (yd.) 5| yards, or 16| feet = 1 rod (rd.) 320 rods, or 5280 feet = 1 mile (mi.) Square Measure 144 square inches (sq.
Página 109 - TABLE. 2 pints pt. make 1 quart, marked qt. 8 quarts - 1 peck, - pk. 4 pecks - 1 bushel, - bu.
Página 118 - Thirty days hath September, April, June, and November ; All the rest have thirty-one, Except the second month alone, Which has but twenty-eight, in fine, Till leap year gives it twenty-nine.
Página 112 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints — 1 quart (qt.) 4 quarts = 1 gallon (gal.) 31| gallons = 1 barrel (bbl.) 2 barrels = 1 hogshead (hhd...
Página 116 - A Square is a figure having four equal sides and four right angles.
Página 80 - Reduce the fractions to a common denominator and divide the numerator of the dividend by the numerator of the divisor.
Página 28 - Division is the process of finding how many times one number is contained in another ; or of finding one of the equal parts of a number.