# Shop Mathematics ...: Shop arithmetic

McGraw-Hill book Company, 1912

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### Περιεχόμενα

 Addition of fractions 11 Subtraction of fractions 12 CHAPTER III 17 A fraction times a fraction 18 Cancellation 19 Divisionthe reverse of multiplication 21 How to analyze practical problems 22 CHAPTER IV 24 Addition 25 ART PAGE 29 Subtraction 26 Reducing dollars to cents 27 Reducing cents to dollars 28 Wage calculations 29 CHAPTER V 33 Addition and subtraction 35 Multiplication 36 Short cuts 37 Reducing common fractions to decimals 39 Complex decimals 40 CHAPTER VI 44 The uses of percentage 46 Efficiencies 47 Classes of problems 48 CHAPTER VII 51 Formulas 52 Circumferential speeds 54 Grindstones and emery wheels 55 Cutting speeds 57 Pulleys and belts 58 CHAPTER VIII 59 Proportion 60 Speeds and diameters of pulleys 63 Gear ratios 64 CHAPTER IX 65 Gear trains 66
 Short rule for plates 83 CHAPTER XI 85 Extracting the square root 86 Square roots of mixed numbers 87 Rules for square root 88 The law of right triangles 89 Dimensions of squares and circles 91 Cube root 92 CHAPTER XII 94 Explanation of the tables 95 Interpolation 96 Roots of numbers greater than 1000 97 Cube roots of decimals 98 Square root by the table 99 CHAPTER XIV 123 CHAPTER XV 130 CHAPTER XVI 137 CHAPTER XVII 145 Frictional horsepower 151 CHAPTER XVIII 153 Transmission of pressure through fluids 154 The hydraulic jack 155 Hydraulic machinery 158 Steam and air 159 CHAPTER XIX 163 Temperatures 164 Expansion and contraction 168 Allowances for shrink fits 171 CHAPTER XX 173 Ultimate stresses 174 Strengths of bolts 175 Strengths of hemp ropes 177 Columns 178 Πνευματικά δικαιώματα

### Δημοφιλή αποσπάσματα

Σελίδα 57 - In any proportion, the product of the means is equal to the product of the extremes.
Σελίδα 85 - Put another way, if you construct squares on the edges of a right-angled triangle, the area of the square on the hypotenuse is equal to the sum of the areas of the squares on the other two sides.
Σελίδα 58 - Solve by knowing that the product of the means equals the product of the extremes...
Σελίδα 5 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes =1 hour (hr.) 24...
Σελίδα 35 - If there are more decimal places in the divisor than in the dividend, what do you do ? What will the figures of the quotient then be ? § 132.
Σελίδα 34 - Subtract the number of decimal places in the divisor from the number of decimal places in the dividend, and point off as many decimal places in the quotient as there are units in the remainder thus found.
Σελίδα 142 - MEP in pounds per square inch; A = area of piston in square inches; L = length of stroke in feet ; N= number of working strokes per minute.
Σελίδα 33 - 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 1 - An Improper Fraction is one whose numerator is equal to, or greater than, the denominator; as, f, f.
Σελίδα 98 - No. Square Cube Square root Cube root No. Square Cube Square root Cube root 1 1 1 1.