# Text-book of arithmetic, for the use of teachers

### Contents

 Introductory Exercises in Addition c 3 Multiplication 9 Division 15 Abbreviated Multiplication 21 Compound Addition 27 Simple Proportion 33 Compound Proportion 39 Decimal Fractions 57
 Per Centages 76 Discount for Time 83 Square and Cubic Measure 89 Tare and Tret 96 Marine Insurance 102 APPENDIX I 221 APPENDIX IV 233 APPENDIX V 247

### Popular passages

Page 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 21: twenty-one 22: twenty-two...
Page 31 - When the dividend does not contain the divisor an exact number of times, the part of the dividend left is called the remainder, and it must be less than the divisor.
Page 143 - Two travellers, A and B, set out to meet each other, A leaving the town C at the same time that B left D. They travelled the direct road between C and D ; and on meeting, it appeared that A had travelled 18 miles more than B, and that A could have gone B's distance in 15J days, but B would have been 28 days in going A's distance.
Page 64 - Then move the decimal point in the dividend the same number of places to the right.
Page 43 - An Improper Fraction is one whose numerator is equal to or greater than its denominator ; as, f...
Page 198 - To divide the number 90 into four such parts, that if the first be increased by 2, the second diminished by 2, the third multiplied...
Page 63 - 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.
Page 51 - If the multiplier contains several units, the product will be as many times greater than the multiplicand, as the multiplier is greater than unity.
Page 134 - ... the right of the divisor. 4. Multiply the divisor thus increased, by the last ^figure of the root; subtract the product from the dividend ; to the remainder annex the next period for a new dividend.
Page 9 - Subtraction may be proved as in Arithmetic, by adding the remainder to the subtrahend. The sum should be equal to the minuend. (44.) The term subtraction, it will be perceived, is used in a more general sense in algebra than in arithmetic. In arithmetic, where all quantities are regarded as positive, a number is always diminished by subtraction. But in algebra, the difference between two quantities may be numerically greater...