Graded Problems in Arithmetic and Mensuration

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E.H. Butler & Company, 1880 - Arithmetic - 232 pages
 

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Page 99 - Measure 144 square inches = 1 square foot 9 square feet = 1 square yard 30J square yards = 1 square rod 160 square rods = 1 acre 640 acres = 1 square mile...
Page 37 - A and B can do a piece of work in 12| days, and A alone can do it in 28^- days.
Page 97 - Multiply as in whole numbers, and point off as many decimal places in the product as there are in both multiplicand and multiplier. DIVISION. Divide as in whole numbers, and point off...
Page 120 - COUNTING. 12 units or things make 1 dozen. 12 dozen " 1 gross. 12 gross " 1 great gross. 20 units
Page 99 - MONEY. 10 mills = 1 cent. 10 cents = 1 dime. 10 dimes = 1 dollar. 10 dollars = 1 eagle.
Page 120 - 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 83 - If 15 men can do a piece of work in 12 days of 10 hours each, in how many days of 8 hours each could 50 men do 3^ times as much work, the latter work being 25% easier than the former?
Page 109 - From half the sum of the three sides subtract each side ; multiply the half sum and the three remainders together, and the square root of the product will be the area required.
Page 119 - Liquid Measure. — 4 gills = 1 pint; 2 pints = 1 quart; 4 quarts = 1 gallon; 31| gallons = 1 barrel; 2 barrels = 1 hogshead.
Page 92 - To change dollars and cents to cents, or dollars, cents, and mills to mills, remove the decimal point and the sign, $. 5.

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