 | British Association for the Advancement of Science - 1902 - 164 páginas
...approximate calculation that should be taught is contracted multiplication of decimals ; and here, too much time should not be spent in ensuring accuracy...figure. Give and take should be permitted, to save time. The position of the decimal point should be determined by a very rough approximation, in which two... | |
 | Edinburgh Mathematical Society - 1900 - 410 páginas
...1-728 -=-4-8 and 1728 -=-0-48. Arrange thus -36 = Quotient 3600- = Quotient 4-8)1-728 0-48)17281-44 144 •288 288•288 288The method in every case is...trial that this involves much unnecessary labour. Sec examples on pages 57, 59, 60, and 61. The case of approximation in division is much simplified... | |
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... carry the decimal point all through the working. In fact as, in the method suggested, the units figures are always in a vertical column, the position of the units needs to be indicated only once. The methods of contraction for addition, subtraction,... 