不知可不可以?1.下面式子中,是整除的式子是（）①4÷8=0.5②39÷3＝13③5.2÷2.6＝22.在2/3、3/20和7/28中,能化成有限小数的分数有（）①3个②2个③1个下面几种图形中,对称轴条数最多的图形是（）....

　　口算题和计算题呢

　　口算题17×40＝680,100－63＝37,3.2＋1.68＝4.88,2.8×0.4＝1.1214－7.4＝6.6,1.92÷0.04＝48,0.32×500＝160,0.65＋4.35＝510－5.4＝4.6,4÷20＝0.2,3.5×200＝700,1.5－0.06＝1.440.75÷15＝0.05,0.4×0.8＝0.32,4×0.25＝1,0.36＋1.54＝21.01×99＝99.99,420÷35＝12,25×12＝300,135÷0.5＝2703/4+1/4=1,2+4/9=22/9,3-2/3=7/3,3/4-1/2=1/41/6+1/2-1/6=1/2,7.5-(2.5+3.8)=1.2,7/8+3/8=5/43/10+1/5=1/2,4/5-7/10=1/10,2-1/6-1/3=1.50.51÷17＝0.03,32.8＋19＝51.8,5.2÷1.3＝4,1.6×0.4＝0.644.9×0.7＝3.43,1÷5＝0.2,6÷12＝0.5,0.87－0.49＝0.38计算题30.8÷[14－(9.85＋1.07)][60－(9.5＋28.9)]÷0.182.881÷0.43－0.24×3.520×[(2.44－1.8)÷0.4＋0.15]28-(3.4+1.25×2.4)2.55×7.1+2.45×7.1777×9+1111×30.8×〔15.5-(3.21+5.79)〕（31.8+3.2×4）÷531.5×4÷(6+3)0.64×25×7.8+2.22÷2.5+2.5÷2194－64.8÷1.8×0.936.72÷4.25×9.95180－705×624÷2.4－2.5×0.8(4121+2389)÷7671×15-974469×12+1492405×(3213-3189)3.416÷（0.016×35）0.8×[(10－6.76)÷1.2]19.4×6.1×2.35.67×0.2-0.6218.1×0.92+3.930.0430.24+0.8750.4×0.7×0.250.75×102100-56.230.78+5.436+14.07×0.86+9.12.5