# Dubbs' Complete Mental Arithmetic: A Volume of Carefully Graded Exercises to the Use of All Schools

E.L. Dubbs, 1893 - 219 páginas

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### Contenido

 Addition I 3 + 4 4 + 6 6 4+ 9 Subtraction II 11 Addition and Subtraction 18 Multiplication 20 9+ I10 21
 Factoring 44 Fractions 47 I+ 2 3 53 Tables 108 Questions 125 Percentage 163 Interest 190 Discount 201

 Division 28 Multiplication and Division 35 Principles 42
 Involution and Evolution 203 Miscellaneous Questions 209

### 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.