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我们对数的认识是一步一步地深入的,在小学里同学们先学习了自然数(正整数与零),以后又学习了小数(有限小数和无限循环小数)及百分数(初步认识的圆周率π除外),实
Our understanding of the logarithm is a step-by-step deepening. Students learn primary natural numbers (positive integers and zeroes) in elementary schools and later learn fractional numbers (finite decimals and infinite cyclic decimals) and percentages (except for initial recognition pi ),real