660*38+34*380怎么巧算(
660*38+34*380怎么巧算? -
660x38+34x380 =380x（66+34）380x100 =38000 以上就是简便计算过程。
=380x(66+34)=380x100 =38000 以上就是巧算方法。
660x38+34x380 =380x（66+34）380x100 =38000 以上就是简便计算过程。
=380x(66+34)=380x100 =38000 以上就是巧算方法。
660*38+33*380 =66*10*38+33*380 =66*380+33*380 =99*380 =（100-1）380 =100*380-1*380 =38000-380 =37620
660x3.4+34x34 巧算=660x3.4+3.4x340 =(660+340)x3.4 =1000x3.4 =3400
340x67 66x670巧算怎么做 -
340x67+66x670 解：巧算=340x67+660x67 =(340+660) x67 乘法分配律=1000x67 =67000 祝学习进步。
120×34=(100+20)*34 =100*34+20*34 =3400+(10+10)*34 =3400+340+340 =3740+340 =4080 12×660=12*66*10 =120*66 =(100+20)*66 =100*66+20*66 =6600+(10+10)*66 =6600+10*66+10*66 =6600+660+660 =7260+660 =7920 后面会介绍。
650*34+660*65巧算 -
650*34+660*65 =65*340+660*65 =65（340+660）65x1000 =65000
=19999 67×9＋99×3 =67×9+9×33 =9×100=900 （632×5＋632×2＋632）×125 =632×8×125 =632×1000 =632000 回答者：昊然郑气 | 五级| 2010-12-27 17:55 99×199+99+199 =199x(99+1) + 99 = 199x100 + 99 = 19900+99 = 19999 2)67×9＋99×3 = 67*9 +等会说。
一道数学题巧算 -
924x5=4620=4200+420=600x7+60x7=660x7 原式=4620/7=660
33×8+66×18+22×34巧算如下：=11×3×8+11×6×18+11×2×34 =11×24+11×108+11×68 =11×(24+108+68)=11×200 =2200 希望可以帮到你！望采纳！