题文
计算 (1)5400-2940÷28×27 (2)(+)÷+ (3)×+÷4 (4)(+)×8+ (5)[2.5-(+0.15)÷0.6]× (6)若!是一种数学运算符号,并且有1!=1,2!=2×1=2,3!=3×2×1=6,4!=4×3×2×1…则求98!分之100!的值? |
题型:解答题 难度:中档
答案
(1)5400-2940÷28×27 =5400-105×27, =5400-2835, =2565;
(2)(+)÷+ =(+)÷+, =×+, =+, =;
(3)×+÷4 =×+×, =(+)×, =1×, =;
(4)(+)×8+ =×8+×8+, =5++, =5+(+), =5+1, =6;
(5)[2.5-(+0.15)÷0.6]× =[2.5-(0.85+0.15)÷0.6]×, =[2.5-1÷0.6]×, =[2.5-] =2.5×-×, =1-, =;
(6) =, =100×99, =9900. |
据专家权威分析,试题“计算(1)5400-2940÷28×27(2)(45+14)÷73+710(3)56×14+16÷4(4)(58+1..”主要考查你对 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:
整数,小数,分数,百分数和比例的混合计算
考点名称:整数,小数,分数,百分数和比例的混合计算
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