3.33乘以6.66简算
3.33乘以6.66简算 -
3.33乘以6.66 =3.33*3*2.22 =（10-0.01)*2.22 =22.2-2.22 =19.98
9.99*7.78+3.33+6.66这道题的简算怎么算？ 解：9.99*7.78+3.33+6.66 =9.99*7.78+9.99 =9.99*（7.78+1） =9.99*8.78 =（10-0.01）8.78 =87.8-0.0878=87.7122 9.99×7.78+6.66×3.33巧算 9.99×7.78+6.66×3.33 =9.99×7.78+2.22×9等会说。
3.33乘以6.66 =3.33*3*2.22 =（10-0.01)*2.22 =22.2-2.22 =19.98
9.99*7.78+3.33+6.66这道题的简算怎么算？ 解：9.99*7.78+3.33+6.66 =9.99*7.78+9.99 =9.99*（7.78+1） =9.99*8.78 =（10-0.01）8.78 =87.8-0.0878=87.7122 9.99×7.78+6.66×3.33巧算 9.99×7.78+6.66×3.33 =9.99×7.78+2.22×9等会说。
3.33*6.6+6.66*1.7 =3.33*（6.6+2*1.7）3.33*10 =33.3 计算结果为33.3
9.99*7.78+3.33*6.66 =9.99*7.78+9.99*2.22 =9.99*(7.78+2.22)=99.9
简算9.99*7.78+3.33*6.66 -
3.33*[3*7.78+6.66]=3.33*3*[7.78+2.22]=10*10=100 9.99*7.78+3.33*6.66 =9.99*7.78+9.99*2.22 =9.99*(7.78+2.22)=99.9 9.99*7.78+3.33*6.66 =9.99*7.78+3.33*3*2.22=9.99*7.78+9.99*2.22 =9.99*(7.78+2.22)=99.9 说完了。
图过程，
999*7.78+333*6.66=?(要简算) -
999*7.78+333*6.66 =999*7.78+333*3*2.22 =999*7.78+999*2.22 =999(7.78+2.22)=999*10 =9990
999×7.78＋333×6.66=999×7.78+333×(3×2.22)=999×7.78+999×2.22=999×(7.78+2.22) =999×10=9990
3.33×8.88 6.66×5.56怎么简算 -
解：3.33×8.88 +6.66×5.56 =3.33×2x4.44 +6.66×5.56 =6.66x4.44+6.66x5.56 =6.66x(4.44+5.56)=6.66x10 =66.6
9994