五年级小数加减法简便计算

问题描述:

五年级小数加减法简便计算

题目呢?a+b=b+aa+b+c=a+(b+c)a-b-c=a-(b+c)5.93+0.19+2.813.07-0.38-1.62 7.3+2.7-7.3+2.7 1.27+3.9+0.73+16.148.4+2.78+51.6-0.78 23.4-0.8-13.4-7.2139.46—(58.74+19.46)4.8+8.63+5.2+0.372.35+1.713+0.287+7.657.5+4.9-6.5 36.54-1.76-4.54 3.25+1.79-0.59+1.7512.7-(3.7+0.84) 25.6-(0.23+5.6)-1.77 13.6+(4.28+6.4)+5.72