总述:本次共解1题。其中
☆算术计算1题
〖1/1算式〗
作业:求算式 1.9*1.8*2+1.2*2.3*2+1.7*2.5*3+(1.2*9.1+1.2*8)*2+2.8*2.5 的值.
题型:数学计算
解:
1.9*1.8*2+1.2*2.3*2+1.7*2.5*3+(1.2*9.1+1.2*8)*2+2.8*2.5
=1.9*1.8*2+1.2*2.3*2+1.7*2.5*3+20.52*2+2.8*2.5
=3.42*2+1.2*2.3*2+1.7*2.5*3+20.52*2+2.8*2.5
=6.84+1.2*2.3*2+1.7*2.5*3+20.52*2+2.8*2.5
=6.84+2.76*2+1.7*2.5*3+20.52*2+2.8*2.5
=6.84+5.52+1.7*2.5*3+20.52*2+2.8*2.5
=6.84+5.52+4.25*3+20.52*2+2.8*2.5
=6.84+5.52+12.75+20.52*2+2.8*2.5
=6.84+5.52+12.75+41.04+2.8*2.5
=6.84+5.52+12.75+41.04+7
=12.36+12.75+41.04+7
=25.11+41.04+7
=66.15+7
=73.15 答案:1.9*1.8*2+1.2*2.3*2+1.7*2.5*3+(1.2*9.1+1.2*8)*2+2.8*2.5=73.15你的问题在这里没有得到解决?请到 热门难题 里面看看吧!