# Mental Arithmetic

Charles E. Merrill, 1896 - Mental arithmetic - 173 pages

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### Contents

 WHOLE NUMBERS 3 UNITED STATES MONEY 42 COMMON FRACTIONS 49 COMPOUND QUANTITIES 109
 Review Problems 117 PERCENTAGE 124 MISCELLANEOUS PROBLEMS 153

### Popular passages

Page 108 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Page 110 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes = 1 hour (hr.) 24 hours = 1 day (da.) 7 days = 1 week (wk.) 365 days = 1 common year (yr.) 366 days . = 1 leap year (1.
Page 103 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt...
Page 104 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Page 37 - A, after traveling 2 hours, at the rate of 5 miles an hour, was followed by B, at the rate of 7 miles an hour ; in how many hours would В overtake A ? 3.
Page 95 - If 5 men can do a piece of work in 10| days, how long will it take 1 man to do the same ? 12.
Page 124 - A man sold two farms for \$1,890 each. On one he gained 25%, and on the other he lost 25%.
Page 112 - NUMBERS. 12 units = 1 dozen. 12 dozen — 1 gross. 12 gross = 1 great gross. 20 units = 1 score.
Page 109 - TABLE. 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.). 27 cubic feet = 1 cubic yard (cu. yd.). 53. Wood Measure is used in measuring wood and other merchandise. TABLE. 16 cubic feet = 1 cord foot (cd. ft.). 8 cord feet or 128 cubic feet = 1 cord (cd.).