Shop Mathematics ...: Prepared in the Extension Division of the University of Wisconsin, Τόμος 1McGraw-Hill book Company, Incorporated, 1924 |
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Σελίδα ix
... means times 23. A fraction times a fraction . 222233 3 34 4 5 5 6 = 23 11 12 13 13 14 15 19 19 20 20 21 23 24 24 24. Multiplying mixed numbers . 25. Cancellation . 26. Division - the reverse of multiplication 27. Compound fractions . 28 ...
... means times 23. A fraction times a fraction . 222233 3 34 4 5 5 6 = 23 11 12 13 13 14 15 19 19 20 20 21 23 24 24 24. Multiplying mixed numbers . 25. Cancellation . 26. Division - the reverse of multiplication 27. Compound fractions . 28 ...
Σελίδα 3
... means 4 whole units and a unit more . 9. Reduction of Fractions . - Quite often we find it desirable to change the form of a fraction in order to make certain calcula- 1 2 3 FIG . 2. - Scale divided to illustrate reduction of fractions ...
... means 4 whole units and a unit more . 9. Reduction of Fractions . - Quite often we find it desirable to change the form of a fraction in order to make certain calcula- 1 2 3 FIG . 2. - Scale divided to illustrate reduction of fractions ...
Σελίδα 6
... means that they are to be added . The minus sign ( - ) when placed in this manner is a signal of subtraction . When the minus sign is placed between two numbers , it must be remembered that the second number is to be subtracted from the ...
... means that they are to be added . The minus sign ( - ) when placed in this manner is a signal of subtraction . When the minus sign is placed between two numbers , it must be remembered that the second number is to be subtracted from the ...
Σελίδα 19
... Means " Times . " - The word " of " is often seen in problems in fractions , as , for instance , " What is of 5 in . ? " In such a case , we work the problem by multiplying , so we say that " of " means " times . " You can see that this ...
... Means " Times . " - The word " of " is often seen in problems in fractions , as , for instance , " What is of 5 in . ? " In such a case , we work the problem by multiplying , so we say that " of " means " times . " You can see that this ...
Σελίδα 20
... means , and why the work is done as just shown . Suppose we are to find of in . This means that of an inch is to be divided into 4 equal parts and 3 of these parts are wanted . If we divide in . into 4 equal parts , each part will be ...
... means , and why the work is done as just shown . Suppose we are to find of in . This means that of an inch is to be divided into 4 equal parts and 3 of these parts are wanted . If we divide in . into 4 equal parts , each part will be ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
amount Answer Antilog belt block boiler bolt brake horsepower calculated castings Centigrade cents ciphers circle circumference common denominator common fraction cube root cubic cutting speed cylinder decimal places decimal point diameter dimensions dimes distance divide dividend division dollar efficiency emery wheel equal Example Explanation Fahrenheit feet final divisor foot-pounds force arm formula given gives heat hoist horsepower improper fraction inclined plane indicated jackscrew lathe lead screw length lever lifted line shaft load logarithmic scale machine mantissa measure mechanical advantage minute mixed numbers multiply number of teeth operation piece piston pound pressure PROBLEMS pulley pump quotient raised reduced revolutions per minute rope shaft shown in Fig slide rule square inch square root steam engine steel stress stroke subtract surface speed temperature threads per inch trial divisor unit volume weight arm whole number width
Δημοφιλή αποσπάσματα
Σελίδα 129 - 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.
Σελίδα 8 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes =1 hour (hr.) 24...
Σελίδα 163 - Fig. 49. We will solve this problem partly graphically and partly by calculation. The first step is to find how fast the crank pin D is moving. For one turn of the crank, D travels through a distance equal to the circumference of a circle whose radius is R, that is, a distance of 2'ffTi.
Σελίδα 3 - An Improper Fraction is one whose numerator is equal to, or greater than, the denominator; as, f, f.
Σελίδα 41 - To divide by 10, move the decimal point one place to the left. To divide by 100, move the decimal. point two places to the left, and so on for other powers of 10.
Σελίδα 5 - When the numerator is less than the denominator, the value of the fraction is less than 1. 5th. When the numerator is equal to the denominator, the value of the fraction is equal to 1. 6th. When the numerator is greater than the denominator, the value of the fraction is greater than 1.
Σελίδα 76 - In any proportion, the product of the means is equal to the product of the extremes.
Σελίδα 41 - To multiply by 10, move the decimal point one place to the right, annexing a zero if necessary.
Σελίδα 2 - Definition of a Fraction. — A Fraction is one or more of the equal parts into which anything may be divided.