A Mental Arithmetic, on the Inductive Plan: Being an Advanced IntellectuaL Course, Designed for Common Schools and AcademiesLeach, Shewell and Sanborn, 1879 - 180 σελίδες |
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Σελίδα 16
... equal to ; thus , 1 foot 12 inches , is read , 1 foot is equal to 12 inches . The SIGN of Addition is an erect cross , + , which signi- fies plus , and , or added to ; thus , 4 + 6 = 10 , is read , 4 plus 6 are equal to 10 . 1. Charles ...
... equal to ; thus , 1 foot 12 inches , is read , 1 foot is equal to 12 inches . The SIGN of Addition is an erect cross , + , which signi- fies plus , and , or added to ; thus , 4 + 6 = 10 , is read , 4 plus 6 are equal to 10 . 1. Charles ...
Σελίδα 21
... 8-62 is read , 8 minus 6 are equal to 2 . 26 . How many are 24 - 12 ? 27 . How many are 30 - 8 ? 28 . How many are 40 2 ? 29 . How many are 40 - 7 ? 30 . How many are 50 72 23 31. How many are 60 10 ? 32. How SUBTRACTION . 21.
... 8-62 is read , 8 minus 6 are equal to 2 . 26 . How many are 24 - 12 ? 27 . How many are 30 - 8 ? 28 . How many are 40 2 ? 29 . How many are 40 - 7 ? 30 . How many are 50 72 23 31. How many are 60 10 ? 32. How SUBTRACTION . 21.
Σελίδα 27
... can reap a field in 9 days , how many men will it take to reap it in one day ? 43. If a quantity of provisions will supply 11 men 8 days , how long will it supply one man ? 44. If 6 pipes of equal size can together fill MULTIPLICATION . 27.
... can reap a field in 9 days , how many men will it take to reap it in one day ? 43. If a quantity of provisions will supply 11 men 8 days , how long will it supply one man ? 44. If 6 pipes of equal size can together fill MULTIPLICATION . 27.
Σελίδα 28
... equal size can together fill a cistern in 12 hours , in how many hours could one of them fill it ? 45. How many men must be employed to do a piece of work in one day , when it takes 11 men 12 days to do it ? 46. If 12 men can dig a ...
... equal size can together fill a cistern in 12 hours , in how many hours could one of them fill it ? 45. How many men must be employed to do a piece of work in one day , when it takes 11 men 12 days to do it ? 46. If 12 men can dig a ...
Σελίδα 31
... equal to 20 . 17. How many are 9 × 4 ? 10 × 8 ? 18. How much more is 10 x 10 than 11 × 9 ? 19. Two men start 50 miles apart , and travel towards each other , the one at the rate of 4 miles an hour , and the other at the rate of 3 miles ...
... equal to 20 . 17. How many are 9 × 4 ? 10 × 8 ? 18. How much more is 10 x 10 than 11 × 9 ? 19. Two men start 50 miles apart , and travel towards each other , the one at the rate of 4 miles an hour , and the other at the rate of 3 miles ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
12 cents 12 days 12 dollars 12 rods 20 per cent 60 cents 9 cents 9 dollars acre amount apples cost barrels of flour bought boys bushels of corn cents a dozen cents a pound cents a quart cents apiece cents buy cents will buy cherries chestnuts cistern contained cords of wood cows denominator dimes divided division dollars a yard earn eight equal fifths form of analysis fourths furlongs gain gallons gave given GREENLEAF'S half halves hogshead horse hundred-weight improper fraction interest of $1 John less LESSON lowest terms melon miles an hour molasses months multiplying ninths NOTE ounces paid peaches pecks pence pennyweights piece pine-apple pints pounds of sugar present worth principal pupil quire rate per cent receive Reduce remainder SECOND ANALYSIS second division sell sevenths sheep shillings sixths square rods tens tenths third three-cent piece week whole number yards of cloth
Δημοφιλή αποσπάσματα
Σελίδα 80 - Multiplying the numerator and denominator of a fraction by the same number does not alter the value of the fraction.
Σελίδα 25 - Multiplication is the process of taking one number as many times as there are units in another number.
Σελίδα 138 - C died, it is required to divide the whole sum properly between the other two ; how much should each receive ? 20.
Σελίδα 33 - The Dividend is the number to be divided. The Divisor is the number by which we divide.
Σελίδα 118 - INTEREST is money paid for the use of money. The PRINCIPAL is the sum of money for which interest is paid. Interest is usually reckoned at a certain rate per cent, for one year. Thus, 6 per cent, means that...
Σελίδα 36 - If 4% bonds to the amount of $8000 face value are bought at 92^%, find the cost of the bonds, and the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in 6 days of 8 hours each ? (Solve by proportion.) 13. By selling a horse for $144, a profit of 60 per cent is made; find the cost of the horse.
Σελίδα 93 - If 3 pounds of butter cost | of a dollar, what cost 10 pounds ? 32. If 4 men can do a piece of work in 16^ days, how long will it take 3 men to do the same ? 33. If | of a rod of land is worth £ of a dollar, what is a rod worth ? ANALYSIS.
Σελίδα 76 - The numerator and denominator are called the terms of the fraction. 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.
Σελίδα 136 - York, and travel in opposite directions, one at the rate of 4^ miles an hour, and the other at the rate of...
Σελίδα 137 - A cistern has 2 pipes ; the first will fill it in 2 hours, and the second will empty it in 3 hours ; if both pipes are open, how long will it take to fill the cistern ? 9. A cistern has 4 pipes ; the first will fill it in 2 hours, the second will fill it...