# Mental Arithmetic

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

### Contents

 WHOLE NUMBERS 5 Multiplication 20 Division 27 Review Problems 33 UNITED STATES MONEY 42 COMMON FRACTIONS 49
 Relation of Numbers 76 Review Problems 88 COMPOUND QUANTITIES 107 Review Problems 117 PERCENTAGE 124 Interest 133

### Popular passages

Page 106 - 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 108 - 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 101 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt...
Page 102 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Page 35 - 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 93 - 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 122 - A man sold two farms for \$1,890 each. On one he gained 25%, and on the other he lost 25%.
Page 110 - NUMBERS. 12 units = 1 dozen. 12 dozen — 1 gross. 12 gross = 1 great gross. 20 units = 1 score.
Page 107 - 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.).