34X98十68简便
68+34✘98的简便方法? -
68十34x98 =68十34x100一2x34 =68十3400一68 =3400
34x98 =34x(100-2)=34x100-34x2 =3400-68 =3332 59x101 =59x(100+1)=59x100+59x1 =5900+59 =5959
68十34x98 =68十34x100一2x34 =68十3400一68 =3400
34x98 =34x(100-2)=34x100-34x2 =3400-68 =3332 59x101 =59x(100+1)=59x100+59x1 =5900+59 =5959
68x98十68x3一68 =68×(98+3-1)=68×100 =6800
0.68×98=68×0.98=68-68×0.02=68-1.36=66.64主要利用乘法分配律,这样的题目一般不难,主要是找准其关系,希望可以解决你的问题,如果你的问题解决了,麻烦采纳,
125x7x8要怎么简便计算? -
125x7x8 =(125x8)x7 =1000x7 =7000