Mental Arithmetic SimplifiedT. Brooke and Company, 1838 - 48 pages |
Other editions - View all
Common terms and phrases
1.-Arithmetic 3.-NUMERATION teaches Appendix article cost avoirdupois black board bushels clear views Demonstration.-Taking farthings Demonstration.-The interest denominator dividing by 48 DONCASTER drachm equal to dividing equal to multiplying Example.-One examples farthings as shillings farthings is equal find the interest find the value gallons given number gross improper fraction Knight's Arithmetic less number less than unity low numbers Measure multiplying by 48 number be divided number of articles number of figures number of months number of pence number of pounds number of shillings Omitting Sundays OTLEY ounce particular number pence as shillings pounds as pence quotient rate per cent RULE.-Divide RULE.-Multiply RULE.-Reckon RULE.-Take score shillings as farthings shillings is equal squirrel stole stone Subtraction sum of money take the aliquot Troy Weight unit figure views of number week whole number write any number yards
Popular passages
Page 9 - RULE. Multiply all the numerators together for a new numerator, and all the denominators for a new denominator: then reduce the new fraction to its lowest terms.
Page 40 - DIVISIONS OF THE CIRCLE. 60 Seconds = 1 Minute. 60 Minutes = 1 Degree. 30 Degrees = 1 Sign. 90 Degrees = 1 Quadrant. 360 Degrees, or 12 Signs = 1 Circumference. Formerly the subdivisions were carried on by sixties ; thus, the second was divided into 60 thirds, the third into 60 fourths, &c.
Page 11 - To find the value of 100 articles, the price of one being given. RULE. — For every farthing in the price take as many pence, and twice as many shillings. Thus, 100 pencils at 1-Jd. each is 12«.
Page 36 - To find the interest of any sum of money at any rate per cent, for any given time. Ex. 1. What is the interest of $ 26.25 for 2 years, 4 months, at 7 per cent.
Page 40 - Thirty days hath September, April, June, and November, February hath twenty-eight alone, and all the rest hath thirty and one.
Page 39 - Weight. 16 drams — 1 ounce. 16 ounces = 1 pound. 14 pounds = 1 stone.
Page 39 - LENGTH. 12 inches = 1 foot 3 feet = 1 yard 5| yards = 1 pole or perch 40 poles =• 1 furlong 8 furlongs = 1 mile 3 miles = 1 league...
Page 33 - Prove one of the following rules of mental arithmetic in such a way as to make it intelligible to a class of children. 1. To find the value of 144 things in shillings, multiply the price in farthings by 3. 2. To find the interest of any sum of money for any number of months at any rate per cent., count one penny for each £10 in the principal, then multiply by the number of months and by double the rate per cent.
Page 39 - Apothecaries' system 20 grains 1 scruple 3 scruples 1 drachm 8 drachms 1 ounce 12 ounces 1 pound...
Page 39 - Sq. Yards = 1 Perch or Rod 40 Perches = 1 Rood 4 Roods = 1 Acre 640 Acres = 1 Sq. Mile 3. MEASURES OF SOLIDITY AND CAPACITY. DIVISION I — SOLIDITY. 1728 Cubic Inches = 1 Cubic Foot 27 Cubic Feet = 1 Cubic Yard DIVISION IL — CAPACITY.