www.qprq.net > "99.99×11.11+33.33×667"用简便运算怎么计算?

"99.99×11.11+33.33×667"用简便运算怎么计算?

原式=3*11+7*11+66*11 =76*11=836 望采纳

原式 =66.66x11.11+33.33x77.78 =33.33x2x11.11+33.33x77.78 =33.33x22.22+33.33x77.78 =33.33x(22.22+77.78) =33.33x100 =3333

11.11×6666+7778×33.33=11.11×(2222×3)+7778×33.33=(11.11×3)×2222+7778×33.33=33.33×2222+7778×33.33=33.33×(2222+7778)=33.33×10000=333300

99.99×11.11+33.33×66.67 =33.33×3×11.11+33.33×66.67 =33.33×(33.33+66.67) =3333

11.11 33.33 55.55 77.77 99.99简便方法是什么 11.11 33.33 55.55 77.77 99.99 =11.11*(1+9+3+7+5) =11.11*25 =277.75

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

我会

89×33+33×11 =(89+11)×33 =100×33 =3300

=3×1+3×11+3×111+3×1111+3×11111 =3×(1+11+111+1111+11111) =3×12345 =37035

32/33×34 =32/33×(33+1) =32/33×33+32/33×1 =32+32/33 =32又32/33

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