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?

99.99×11.11+33.33×667 =33.33×(33.33+667) =33.33×700.33 =3333×(7+0.003+0.0003) =23331+9.999+0.9999 =23341.9989

=3333X(22.22+77.78) =3333X100 =333300

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

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

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

99×11+33×68 =33*(3*11+68) =33*101 =33*(100+1) =3300+33 =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

用递等式计算埃解:22×35+33×7+99=11×2×35+11×3×7+11×9把11提出来=11×(2×35+3×7+9)=11×(70+3×7+9)=11×(70+21+9)=11×(91+9)=11×100=1100

50×11+48×33+6×11 =50×11+48×3×11+6×11 =50×11+144×11+6×11 =(50+144+6)×11 =200×11 =2200

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