题文
计算 (1)[5-3÷(1+2.25×)]÷12.5% (2)[2-(8.25-5)×]÷0.9 (3)(20+12.56-31)÷299+(13-12.25)×1 (4)×(4.85÷-3.6+6.15×3)+1.75×(1+)+5.5. |
题型:解答题 难度:中档
答案
(1)[5-3÷(1+2.25×)]÷12.5%, =[5-3÷(1+)]÷12.5%, =[5-3÷]÷12.5%, =[5-]÷12.5%, =×8, =;
(2)[2-(8.25-5)×]÷0.9, =[2-1.68×1.57]÷0.9, =[2-2.6376]÷0.9, =[-0.6376]÷0.9, =-;
(3)(20+12.56-31)÷299+(13-12.25)×1, =(20+12.56-31)÷299+1.15×1, =(12.56-11)÷299+2.07, =1.56÷299+2.07, =+2, =2;
(4)×(4.85÷-3.6+6.15×3)+1.75×(1+)+5.5, =×(-3.6+)+1.75×2+5.5, =×(-3+)+1.75×2+5.5, =×(+)+3.5+5.5, =×+9, =+9, =9. |
据专家权威分析,试题“计算(1)[5-32263÷(114+2.25×45)]÷12.5%(2)[2-(8.25-5π2)×π2]÷..”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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