The Industrial Primary Arithmetic

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Ginn, 1891 - 264 páginas
 

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Página 124 - If 8 men can do a piece of work in 12 days, how long will it take...
Página 115 - I two 2 II three 3 III four 4 IV five 5 V six 6 VI seven 7 VII eight 8 VIII nine 9 IX ten 10 X eleven 1 1 XI twelve 12 XII Direction: Have ready two sets of cards.
Página 251 - APOTHECARIES' WEIGHT 20 grains = 1 scruple. 3 scruples = 1 dram. 8 drams = 1 ounce. 12 ounces = 1 pound.
Página 186 - And every other thirty-one, Except the second month alone, Which has but twenty-eight in fine, Till leap year gives it twenty -nine.

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