六年级数学下册口算练习题(70份)(共7页).doc

精选优质文档-倾情为你奉上（1）97 + 258=369204=10125 =5012 =3603 =30050 =（2）362 + 298=363199=32101 =2540 =45090 =905 =（3）204 + 365=457302=1258 =1270 =48012 =50050 =（4）450 + 250=360240=5024=3106 =6015 =96030 =（5）4.1+ 0.9=2.31.8=0.29 =0.30.7 =0.63 =0.150.5 =（6）3 + 1.2=7.3 5 =0.20.4 =1.20.5 =2.40.6 =240.3 =（7）7.12+ 0.5 =6 1.8=1.50.4 =250.4 =4.20.07 =40.08 =（8）2 + 5.9