初中数学竞赛中常出现带省略号的数式计算题,由于这类问题具有项数多、式子长、数字大,且藏腹露头尾,貌似复杂,因此往往令人望而生畏.但只要认真分析式子中数值的结构特点,掌握其规律.灵活运用一些解题技巧,问题便会迅速求解.现略举几例加以说明: Mathematical competitions in the junior high school often appear with numerical calculation problems with ellipsis, because such problems have many items, long expressions, large numbers, and Tibetan abdomen exposed, appear complex, it is often daunting. But as long as a serious analysis of formula The structural characteristics of the numerical value, to master its laws. Flexible use of some problem-solving techniques, the problem will be quickly solved. Now a few examples to illustrate: