来自蔡毅的问题
简算.7.54-0.68-1.323.27+6.3+2.73+4.7(125+7)×8;728×79十728.
简算.7.54-0.68-1.323.27+6.3+2.73+4.7(125+7)×8;728×79十728.
1回答
2020-04-07 23:51
简算.7.54-0.68-1.323.27+6.3+2.73+4.7(125+7)×8;728×79十728.
简算.7.54-0.68-1.323.27+6.3+2.73+4.7(125+7)×8;728×79十728.
(1)7.54-0.68-1.32,=7.54-(0.68+1.32),=7.54-2,=5.54;(2)3.27+6.3+2.73+4.7,=(3.27+2.73)+(6.3+4.7),=6+11,=17;(3)(125+7)×8,=125×8+7×8,=1000+56,=1056;(4)728×79十728,=728×79+...