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1994+199.4+19.94+1.994

1994+199.4+19.94+1.994=1.994(1000+100+10+1)=1.994*1111=2215.334 如果帮到你,请记得采纳,o(∩_∩)o谢谢

1994+199.4+19.94+1.994=2000-6+200-0.6+20-0.06+2-0.006=2222-6.666=2215.334希望对你有所帮助

1994+199.4+19.94+1.994=2215.334 199999+19999+1999+199+19=222215绝对准

1994+ 199.4 +19.94 +1.94 =1994x(1+0.1+0.01)+1.94 =2213.34+1.94 =2215.28

原第二式是:10.3乘以9.7乘以100.09 则有:原式=(10+0.3)(100.3)*100.09 =(1000.09)*(100+0.09)=100000.0081=9999.0019

222.07328

(1)1994+199.4+19.94+1.994 (2)1+2+3..+50 (3)2.008*360-20.08*41+200.8*2

(2-0.006)*(1+10+100+1000) =2222-6.666 =2215.334

2015+199.4+19.94+1.994=(2000+15) +(200-0.6)+(20-0.06)+(2-0.006)=(2000+200+20+2+15)-(0.6+0.06+0.006)=2237-0.666=2236.334

1. 111111*999999=111111*(1000000-1)=111111000000-111111=1111108888892. 7.5*43+19*2.5=2.5(43*3+19)=2.5(129+19)=3703. 1994+199.4+19.94+1.994=1.994(1000+100+10+1)=1.994*1111=2215.3344. 100+99+98-97-96-95+…+10+9

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