# Junior High School Mathematics, Βιβλίο 1

H. Holt, 1919

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### Περιεχόμενα

 CHAPTER II 17 Problems without Numbers 18 The Cost Formula 20 Making Formulas 22 Formulas for Practice 26 Reduction of Fractions 28 Exercises for Practice 29 74 30 Some New Symbols 32 CHAPTER III 36 Problems Involving Large Numbers 39 Reduction of Decimal Fractions to Common Fractions 40 Multiplication and Division by Powers of 10 41 Multiplication of Decimal Fractions 43 Division of Decimal Fractions by Integers 44 Division by Decimals 45 Getting Results to a Desired Degree of Accuracy 47 Advantages of the Metric System 51 Square Measure 55 Capacity and Weight 56 Equivalents 57 CHAPTER IV 63
 Problems of Food Values 81 CHAPTER V 83 To Find the Cost When the Selling Price and the Gain or Loss Per Cent Are Known 85 Profit and Loss Formulas 87 Meaning of Commercial Discount 89 Bills 91 Problems of the Dairyman 96 Meaning of Interest 100 CHAPTER VII 113 Drawing to Scale 120 The Relation between the Circumference and the Diameter 127 Kinds of Angles 134 Circular and Angular Measure 141 Standard Time 147 CHAPTER X 165 CHAPTER XI 180 The Area of a Triangle 186 Review Problems 193 Tables 205 180 162 Πνευματικά δικαιώματα

### Δημοφιλή αποσπάσματα

Σελίδα 205 - 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...
Σελίδα 205 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards — 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq. mi.) Cubic Measure 1728 cubic inches (cu.
Σελίδα 205 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Σελίδα 56 - OF WEIGHT 10 milligrams (mg.) = 1 centigram (eg.) 10 centigrams = 1 decigram (dg.) 10 decigrams = 1 gram (g.) 10 grams = 1 dekagram (Dg...
Σελίδα 41 - To multiply a decimal by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier ; and if there be not places enough in the number, annex ciphers.
Σελίδα 205 - 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...
Σελίδα 205 - Cubic Measure 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Σελίδα 41 - When a decimal number is to be divided by 10, 100, 1000, &c., remove the decimal point as many places to the left as there are ciphers in the divisor, and if there be not figures enough in the number, prefix ciphers.
Σελίδα 81 - Specific heat is the amount of heat necessary to raise the temperature of a solid or liquid body a certain number of degrees; water is adopted as the unit or standard of comparison.
Σελίδα 56 - Measures of Capacity 10 milliliters (ml) =1 centiliter cl 10 centiliters =1 deciliter dl 10 deciliters =1 liter 1 10 liters =1 dekaliter Dl 10 dekaliters =1 hektoliter HI 10 hektoliters =1 kiloliter Kl NOTE — The liter is equal to the volume occupied by 1 cubic decimeter.