题文
用递等式计算. ①104.8-5×10.4÷ ②2496÷48+1620 ③0.125×32×25 ④42×71.7+28.3×42 ⑤16.8-+3.2-. |
题型:解答题 难度:中档
答案
①104.8-5×10.4÷, =104.8-5×10.4×2, =104.8-10.4×(5×2), =104.8-104, =0.8;
②2496÷48+1620, =52+1620, =1672;
③0.125×32×25, =0.125×8×4×25, =(0.125×8)×(4×25), =1×100, =100;
④42×71.7+28.3×42, =42×(71.7+28.3), =42×100, =4200;
⑤16.8-+3.2-, =(16.8+3.2)-(+), =20-1, =19. |
据专家权威分析,试题“用递等式计算.①104.8-5×10.4÷12②2496÷48+1620③0.125×32×25④42..”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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