沪教版五年级数学上册小数的四则混合运算练习题 一、用递等式计算。3.834.56+3.835.44 4.3612.589.799+9.7 27.53.7-7.53.78.542.50.4 0.65101二、用简便方法计算。3.20.2512.5 3.140.68+31.40.0325.61.250.82.50.4 7.20.2+2.41.48.91.01 7.74(2.8-1.3)+1.52.26(4.87.58.1)(2.42.52.7) 3333366666+999997777843211234-432212344 3.92.7+3.97.3+44.342.73+56.60.273 12.79.9+1.2721(9.3-3.7)-5.6 3.654.7-36.50.374657+2386 13.70.25-3.74三、列综合算式计算。1、比2.4的4倍少3的数,除以1.5, 所得的商除以0.8,结果多少?2、0.6与2.4的积去除3.24与1.8的差,商是多少?