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### Continguts

 GENERAL Preliminary Principles 1 Roman Notation 7 Multiplication 13 Reduction 23 Compound Addition 32 Golden Rule or Rule of Three 44 Vulgar Fractions 51 Addition of Vulgar Fractions 61
 Musical Proportion 119 Compound Interest 127 Single Position 135 Definitions and Notation 161 Fractions 178 Involution 188 Surds 195 Infinite Series 203

 Addition of Decinals 67 Division of Decimals 70 Rule of Three in Decimals 76 To extract the Cube Root 85 Table of Powers and Roots 110
 Piles of Shot or Shells 218 Quadratic Equations 239 Cubic and Higher Powers 247 Simple Interest 256 256 370

### Passatges populars

Pŕgina 282 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Pŕgina 2 - The sum of the three angles of any triangle is equal to two right angles, this is a Theorem, the truth of which is demonstrated by Geometry.
Pŕgina 4 - Los números cardinales 0: zero 1: one 2: two 3: three 4: four 5: five 6: six 7: seven 8: eight 9: nine 10: ten 11: eleven 12: twelve 13: thirteen 14: fourteen 15: fifteen 16: sixteen 17: seventeen 18: eighteen 19: nineteen 20: twenty...
Pŕgina 32 - Place the numbers so that those of the same denomination may stand directly under each other.
Pŕgina 11 - Subtract the subtrahend from the dividend, and to the remainder bring down the next period for a new dividend, with which proceed as before ; and so on, till the whole is finished.
Pŕgina 299 - Hence, conversely, a line drawn perpendicular to a tangent, at the point of contact, passes through the centre of the circle.
Pŕgina 266 - A Right angle is that which is made by one line perpendicular to another. Or when the angles on each side are equal to one another, they are right angles.
Pŕgina 327 - Similar solid figures are such as have all their solid angles equal, each to each, and are contained by the same number of similar planes.
Pŕgina 277 - THE Difference of any Two Sides of a Triangle, is Less than the Third Side.
Pŕgina 186 - Reduce compound fractions to simple ones, and mixt numbers to improper fractions ; then multiply the numerators together for a new numerator, and the denominators for. a new denominator.