1、 0.80.6= 1.2580= 5.243.76=6250.8= 4.23.6= 0.3216=130.26= 9.616= 14.50.24=48= 1.38.46= 0.80.45=52.4= 10.01= 8.13=2.412= 2500.4= 20.52.05=37.5400= 0.782.2= 1.58=61.5= 250.4= 9.616=40.04= 4.150.85= 100.1=0.137= 9.64= 0.168=0.825= 04.23= 0.57+0.43= 2.40.2= 0.02500= 2.89+9.17=2.810= 8.29100= 2.50.4= 4.87
2、-1.7= 8.071000= 25.63=0.3288= 3.513= 7.217=2325= 3.6414 = 1.060.82=7.828= 60050= 20.16=840.25= 0.360.9= 0.060.75=2.43= 200.5= 0.86=10000.09= 1.3527= 0.412.01=580.32= 1.0852= 0.630.12=8.50.54= 5.622.4= 0.280.16=二、列竖式计算1.642.35= 8.656.31= 28.44814= 0.58250=12.53.6= 10.8834= 107.64= 1.867=13.886.29= 92
3、60.15= 8500= 26.37.93=13.68.46= 100.22.28= 449 精确到百分位 237.06=三、计算（能简便的用简便方法计算）82512516 404250 4555（6821555）329932 483961483452178712232556+4565 489109489457+317+343+583（8540）（205） 5784054516 465648464645x450 12（6x）421.26+4x12 （4）8.5xx22.5 用简便方法计算。 0.25 3.212.5 3610.1 0.2544 22.24+17.84 3.86.7+3.33.8
4、1.280.29-0.290.28用递等式计算。 2.6+1.41.51.5 （373.64.8）12.5 2.6+2.4（1.41.05） 15.616（0.25+1.25）30.814-(9.85+1.07) 60-(9.5+28.9)0.18 2.8810.43-0.243.5 20(2.44-1.8)0.4+0.15 28-(3.4+1.252.4) 2.557.1+2.457.1 7779+11113 0.815.5-(3.21+5.79)(31.8+3.24) 5 31.54(6+3) 0.64257.8+2.2 22.5+2.52 46912+1492 19.46.15.670.2-0.6218.10.92+3.93 0.40.70.25 0.78+5.436+1 4. 8 54+14 9x56+56 34x89-13 31x56-56 16. 59x18-14x27 36. 178-14556+42 7.20.8-1.25 6.5（4.8-1.24） 28-(3.4+1.252.4)
