近似数是数学学习中经常遇到的一类数,许多数学问题都要用近似数来加以处理,怎样才能学好近似数呢?要学好近似数就要理解并掌握以下三点要求。一、了解学习近似数的意义为什么要学习近似数,因为现实生活中离不开近似数一方面,有时完全准确是办不到的,如对于π的值,在计算圆的周 The approximate number is a type of number often encountered in mathematics learning. Many mathematical problems must be dealt with by approximate numbers. How can we learn the approximate number? To understand the approximate number, we must understand and master the following three requirements. First, understand the significance of learning the approximate number Why do you want to learn the approximate number, because real life can not be separated from the approximate number, on the one hand, sometimes completely accurate can not be achieved, such as for the value of π, in the calculation of a week round