Question

求41.2x8.1+11x1.25+53.7x1.9的简便运算！

Answer 1

问：求41.2x8.1+11x1.25+53.7x1.9的简便运算！

答：您好，简便计算41.2x8.1+11x1.25+53.7x1.9=333.72+10×1.25+1×1.25+102.03=333.75+12.5+1.25+102.03=333.75+1.25+114.53=335+114.53=449.53

答：41.2×8.1+11×1.25+53.7×1.9=41.2×8+41.2×0.1+10×1.25+1×1.25+53.7×2-53.7×0.1=(329.6+4.12)+(12.5+1.25)+107.4-5.37=333.72+13.75+107.4-5.37=347.47+107.4-5.37=454.87-5.37=449.5

答：您好，您看第二遍发过程，使用了简便算法。