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33.33*66.66+44.44*99.99 巧算

33.33*66.66+44.44*99.99=99.99*22.22+44.44*99.99=99.99*(22.22+44.44)=99.99*66.66=(100-0.01)*66.66=100*66.66-0.01*66.66=6666-0.6666=6665.3334

35.33-(15.33+3.44)-6.66 =35.33-15.33-3.44-6.66 =20-(3.44+6.66) =20-(3.44+6.56+0.1) =20-(10+0.1) =20-10-0.1 =10-0.1 =9.9 谢谢,请采纳

44*(44+66) =44*100+44*10 =4400+440 =4840

11的n次方 先把11提出来

=66*22+55*44+55*66-66*77 =66*-55+55*44+55*66 =55*44 =11*5*11*4 =121*20 =2420

46

99*22+88*33+77*44+66*55 =9×11×2×11+8×11×3×11+7×11×4×11+6×11+5×11 =11²×(18+24+28+30) =121×100 =12100 谢谢采纳!

3453

22×66+33×55+55×77+44×88 =11×11×12+11×11×15+11×11×35+11×11×32 =121×(12+15+35+32) =121×94 =11374

56×33+56×66+99×44 =56x(33+66)+99x44 =56x99+99x44 =99x(56+44) =99x100 =9900

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