总述:本次共解3题。其中
☆算术计算3题
〖1/3算式〗
作业:求算式 (1+1/2-12/16)/(2+1/2-9/16) 的值.
题型:数学计算
解:
(1+1/2-12/16)/(2+1/2-9/16)
=0.75/(2+1/2-9/16)
=0.75/1.9375
=0.387097 答案:(1+1/2-12/16)/(2+1/2-9/16)=0.387097〖2/3算式〗
作业:求算式 (16+8-12)/(32+4-9) 的值.
题型:数学计算
解:
(16+8-12)/(32+4-9)
=12/(32+4-9)
=12/27
=0.444444 答案:(16+8-12)/(32+4-9)=0.444444〖3/3算式〗
作业:求算式 1/(4+4-16)+1/(4+16-4)+1/(16+4-4) 的值.
题型:数学计算
解:
1/(4+4-16)+1/(4+16-4)+1/(16+4-4)
=1/(-8)+1/(4+16-4)+1/(16+4-4)
=1/(-8)+1/16+1/(16+4-4)
=1/(-8)+1/16+1/16
=-0.125+1/16+1/16
=-0.125+0.0625+1/16
=-0.125+0.0625+0.0625
=-0.0625+0.0625
=0 答案:1/(4+4-16)+1/(4+16-4)+1/(16+4-4)=0你的问题在这里没有得到解决?请到 热门难题 里面看看吧!