题文
1-[1-(+÷)]× |
÷[-(+)] |
[5.7-4.8×(480%-3.8)]÷0.45 |
+4÷ |
+++…+ |
(1++3+9)÷(1+3+9). | |
题型:解答题 难度:中档
答案
(1)1-[1-(+÷)]×, =1-[1-(+)]×, =1-[1-1]×, =1-0×, =1-0, =1;
(2)÷[-(+)], =÷[-], =÷, =;
(3)[5.7-4.8×(480%-3.8)]÷0.45, =[5.7-4.8×1]÷0.45, =[5.7-4.8]÷0.45, =0.9÷0.45, =2;
(4)+4÷, =987×(654+1)-321 | 666+987×654 | +4÷, =987×654+987-321 | 666+987×654 | +4÷, =+4÷, =1+4÷, =1+18, =19;
(5)+++…+, =, =, =, =;
(6)(1++3+9)÷(1+3+9), =[(1+3+9)+(++)]÷[(1+3+9)+(++), =[13+]÷[13+], =[13×(1+)]÷[13×(1+)], =(1+)÷(1+), =÷, =. |
据专家权威分析,试题“1-[1-(57+314÷34)]×27932÷[34-(516+14)][5.7-4.8×(480%-3.8)]..”主要考查你对 运算定律和简便算法,分数的简便算法,整数,小数,分数,百分数和比例的混合计算 等考点的理解。关于这些考点的“档案”如下:
运算定律和简便算法分数的简便算法整数,小数,分数,百分数和比例的混合计算
考点名称:运算定律和简便算法
考点名称:分数的简便算法
考点名称:整数,小数,分数,百分数和比例的混合计算