如题所述
第1个回答 2017-05-22
得了
第2个回答 2017-05-22
233+67×15=233+1005=1238,
234×98÷49=234×(98÷49)=234×2=468,
18900÷(918-891)=18900÷27=700,
125×(8+4)×25=125×8×25+125×4×25=1000×25+125×100=25000+12500=37500本回答被提问者采纳
234×98÷49=234×(98÷49)=234×2=468,
18900÷(918-891)=18900÷27=700,
125×(8+4)×25=125×8×25+125×4×25=1000×25+125×100=25000+12500=37500本回答被提问者采纳
第3个回答 2017-05-22
233+67x15=233+1005=1238; 234x98÷49=234x(98÷49)=234x2=468;
18900÷(918-891)=18900÷27=700; 102x45=100x45+2x45=4590;
74x179+22x74-74=74x(179+22-1)=74x200=14800;
125x(8+4)x25=125x25x12=(125x3)x(25x4)=375x100=37500.
18900÷(918-891)=18900÷27=700; 102x45=100x45+2x45=4590;
74x179+22x74-74=74x(179+22-1)=74x200=14800;
125x(8+4)x25=125x25x12=(125x3)x(25x4)=375x100=37500.