题文
脱式计算. 15-(5+3)-41×43×70%-2÷ 【2.1+7÷(3-1)】×1(×5÷×5)×(1.685÷1-0.235×) 1-【4-(31%-)×16】÷115÷63%-【24-8×(3-287.5%)】 |
题型:解答题 难度:中档
答案
(1)15-(5+3)-4 =15-5-3-4, =15-3-(5+4), =11-10, =1;
(2)1×43×70%-2÷ =53.75×70%-2÷, =37.625-2.5, =35.125;
(3)[2.1+7÷(3-1)]×1 =[2.1+7÷]×1, =[2.1+4.8]×1, =6.9×1, =11.5;
(4)(×5÷×5)×(1.685÷1-0.235×) =(÷×5)×(1.348-0.188), =25×1.16, =29;
(5)1-[4-(31%-)×16]÷1 =1-[4-0.21×16]÷1, =1-[4-3]÷1, =1-÷1, =1-, =;
(6)15÷63%-[24-8×(3-287.5%)] =15÷63%-[24-8×1], =15÷63%-16, =25-16, =9. |
据专家权威分析,试题“脱式计算.15729-(538+32229)-458114×43×70%-2÷45【2.1+7÷(3112-1..”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
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