第1个回答 2018-11-25
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b151f8198618367a775a199a23738bd4b21ce5a2?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
未完
追答![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/18d8bc3eb13533facccaf269a5d3fd1f41345b7c?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
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第2个回答 2018-11-25
125x16x25
=125x8×(2×25)
=1000×50
=50000
18x45+55x18
=18×(45+55)
=18×100
=1800
48x201-48
=48×(201-1)
=48×200
=9600
102x99
=102×(100-1)
=10200-102
=10098
第3个回答 2018-11-25
125x16x25
=(125x8)x(2x25)
=1000x50
=50000
18x45+55x18
=15x(45+55)
=15x100
=1500
第4个回答 2018-11-25
125×16×25+18×45+55×18
=125×8×(4×25)+18×(45+55)
=1000×100+18×100
=10100+1800
=11900
第5个回答 2018-11-25
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/42a98226cffc1e172ae4ed764790f603738de91a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
看