题文
化简. (1)0.2+0.3+0.4+0.5 | 0.2×0.3×0.4×0.5 |
(2)2÷(3-2)×2+18 (3)(1-1.6)÷[(3.15+1)×1]×12.6. |
题型:解答题 难度:中档
答案
(1)0.2+0.3+0.4+0.5 | 0.2×0.3×0.4×0.5 | , =, =116;
(2)2÷(3-2)×2+18, =2÷×+18, =××+18, =7+18, =26;
(3)(1-1.6)÷[(3.15+1)×1]×12.6, =(1-1)÷[(3+1)×1]×12.6, =÷[×]×12.6, =÷×12.6, =××12.6, =. |
据专家权威分析,试题“化简.(1)0.2+0.3+0.4+0.50.2×0.3×0.4×0.5(2)2215÷(3512-..”主要考查你对 纯小数,带小数,循环小数,循环节,有限小数,无限小数 等考点的理解。关于这些考点的“档案”如下:
纯小数,带小数,循环小数,循环节,有限小数,无限小数
考点名称:纯小数,带小数,循环小数,循环节,有限小数,无限小数