2010x0.25-210除4用简便运算

2010x0.25-210除4用简便运算

2010×0.25-210÷4
=2010×0.25-210×0.25
=（2010-210）×0.25
=1800×0.25
=450

17×40＝,100－63＝,3.2＋1.68＝,2.8×0.4＝14－7.4＝,1.92÷0.04＝,0.32×500＝,0.65＋4.35＝10－5.4＝4÷20＝0.2,3.5×200＝1.5－0.06＝1.01×99＝,420÷35＝25×12＝135÷0.5＝,3-2/3=3/4-1/2=1/6+1/2-=,7.5-(2.5+3.8)=,7/8+3/8=3/10+1/5=,4/5-7/10=,2-1/6-1/3=0.51÷17＝,32.8＋19＝5.2÷1.3＝,1.6×0.4＝4.9×0.7＝,1÷5＝6÷12＝0.87－0.49＝0.381.(1+1/2)(1+1/3)(1+1/4)(1+1/100)2.(1-1/2)(1-1/3)(1-1/4)(1-1/100)3.8+2-8+24.25*4/25*45.7.26-(5.26-1.5)6.286+1987.314-2028.526+3019.223-9910.6.25+3.85-2.125+3.87511.9-2456*2112.0.5/11.5-4*2.7513.1/2×3/514.3.375+5.75+2.25+6.62515.1001－9036÷1816.3.8×5.25+14.517.2.1*4.3+5.7*2.118.30×1/319.102*45-32820.2/3×1221.2.8*3.1+17.6/822.3/5×5/623.(50-12.5)/2.524.2/5×1/325.6110*47+63926.1/2-1/627.3.5*2.7-52.2/1828.1/7×1/529.3.375*0.97+0.97*6.62530.25×4/531.6.54+2.4+3.46+0.632.5/6-1/233.95.6*1.8+95.6*8.234.1/2×1/535.600-420/1236.344/3.6-5.4*0.2537.16/2+30/2+90/638.3001-1998.39.5000-105*3440.0.15/0.25+0.75*1.241.(1/2+1/3+1/4)*0.2442.(25+4)*443.300-4263/2144.0.81/0.25+5.9645.403÷13×2746.1.5×4.2－0.75÷0.2547.3.27×4+3.27×5.748.（1.2+1.8）×4.51025－768÷3249.0.25×80－0.45÷0.950.1025－768÷3251.0.25*2.69*452.2348+275*1653.2/9*15/8-1/12*9/554.2.4+2.4*(5.375-3.375)55.645-45*1256.0.15+1.2/0.24-0.4557.3.75-(2.35+0.25/1.25)58.76*1/4+23*25/100+0.2559.10-2.87-7.1360.0.96+9.6*9.961.7.5-5.7*1/362.12.37-3.25-6.7563.16*6.8+2.2*16+1664.401*19+28465.58.7-16.65/3.766.0.4*4.7*2.5+(2.3+5.3)67.9.31-1.125-7.87568.640+128*4569.8.2*1.6-0.336/4.270.400*(0.62+0.08)2/1*2=13/1*3=13/2*3=23/1*6=24/3*8=65/3*20=127/3*14=68/7*40=354/3*16=129/5*27=152/1*30=1512/7*24=1430/1*30=151/9*102=1819/9*76=364/9*8=185/8*90=14499/98*99=983/14*6=287/1*28=410/1*90=95/3*105=6319/7*38=145/1*25=58/19*16=3861/60*122=1207/2*28=86/1*48=89/7*18=1425/7*100=289/5*81=458/9*16=18123+25=148123-35=8856×7=392135÷5=27248+89=337146-23=123155×5=775456-12=38456+45=501546-457=8945×10=451564-12=47879+54=933896-546=35056×12=672.45-5=9457+456=913脱式计算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+