### Фй лЭне пй чсЮуфет -Уэнфбоз ксйфйкЮт

Ден енфпрЯубме ксйфйкЭт уфйт ухнЮиейт фпрпиеуЯет.

### Ресйечьменб

 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 Compound gear and pulley trains 68 Screw cutting 72 CHAPTER X 75 Square measure 76 Area of a circle 77 The rectangle 79 The cube 80
 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 XIII 115 Three classes of levers 117 Compound levers 118 Mechanical Advantage 119 The wheel and axle 120 CHAPTER XIV 123 Differential pulleys 126 CHAPTER XV 130 The wedge 132 The jack screw 133 Efficiencies 134 CHAPTER XVI 137 Power 138 Horsepower of belting 139 Widths of belts 140 Rules for belting 141 CHAPTER XVII 145 Gas engines 147 Air compressors 149 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 STRENGTH OF MATERIALS 126 Stresses 173 Ultimate stresses 174 Strengths of bolts 175 Strengths of hemp ropes 177 Columns 178 РнехмбфйкЬ дйкбйюмбфб

### ДзмпцйлЮ брпурЬумбфб

УелЯдб 7 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes = 1 hour (hr.) 24 hours = 1 day (da.) 7 days = 1 week (wk.) 365 days = 1 common year...
УелЯдб 89 - Written as a formula this would read This can be illustrated by drawing squares on each side, as in Fig. 29, and noting that the area of the square on the hypotenuse is equal to the sum of the areas of the other two.
УелЯдб 38 - 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.
УелЯдб 146 - 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.
УелЯдб 37 - 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.
УелЯдб 3 - An Improper Fraction is one whose numerator is equal to, or greater than, the denominator; as, f, f.
УелЯдб 133 - 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.
УелЯдб 38 - EULE.—Divide as in whole numbers, and point off as many decimal places in the quotient as the number of decimal places in the dividend exceeds the number in the divisor.
УелЯдб 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.
УелЯдб 61 - In any proportion, the product of the means is equal to the product of the extremes.