Manual of Intellectual Arithmetic: An Independent Treatise Upon the Basis of Mental Arithmetic

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R.S. Davis & Company, 1881

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Σελίδα 34 - ... miles an hour, how far apart will they be at the end of 1 hour ? At the end of 2 hours ? 4 hours ? 10 hours ? Why ? 4.
Σελίδα 88 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt...
Σελίδα 129 - The head of a fish is 12 inches long, the tail is as long as the head + £ of the body, and the body is as long as the head and tail ; what is the length of the fish ? 4.
Σελίδα 90 - Time is a measured portion of duration. Table. 60 seconds (sec.) are 1 minute, m. 60 minutes, 1 hour. h. 24 hours, 1 day, d. 365 days, 1 common year, cy 366 days, 1 leap year, 1. y. Also, 7 days are 1 week, w.
Σελίδα 81 - TROY WEIGHT. 24 grains (gr.) = 1 pennyweight (pwt.). 20 pennyweights = 1 ounce (oz.). 12 ounces = 1 pound (lb.). 351. Apothecaries' weight is used in mixing medicines and in selling them at retail. APOTHECARIES
Σελίδα 34 - If 2 men start from the same place and travel in opposite directions, one at the rate of 4 miles an hour, and the other at the rate of 5 miles an hour, how far apart will they be at the end of 1 hour ? At the end of 2 hours ? 5 hours?
Σελίδα 130 - В start from the same point, and travel in the same direction around a square, each side of which measures 5 miles ; A travels at the rate of 4| miles an hour, and...
Σελίδα 35 - There is an orchard consisting of ten rows of trees, and nine trees in each row ; how many trees are there in the orchard ? 12.
Σελίδα 121 - ... to do the whole ? 6. Two men set out to mow a field ; the first can mow it in 16 days, and the second in 20 ; how long will it take them both to mow the field ? 7. A cistern has 3 pipes ; the first will fill it in 2 hours, the second in 3 hours, and the third in 6 hours ; how long will it take them all to fill it ? 8.
Σελίδα 80 - United States Money is the legal currency of the United States. Table. 10 mills are 1 cent, marked c.

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