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第1个回答 2015-07-16
25.43-2.85+74.57-7.15
=(25.43+74.57)-(2.85+7.15)
=100-10
90
23.56-(2.017-0.44)+2.017
=23.56+0.44-(2.017-2.017)
=24-0
=24
16.08*1.25
=(4*4+0.08)*1.25
=4*4*1.25+0.08*1.25
=4*6+0.1
=24.1
0.25*3.53*0.2*16*1.25
=0.25*3.53*0.2*4*4*1.25
=(0.25*4)*(4*1.25)*3.53*0.2
=1*5*0.2*3.53
=3.53
=1*1*3.53
=
=(25.43+74.57)-(2.85+7.15)
=100-10
90
23.56-(2.017-0.44)+2.017
=23.56+0.44-(2.017-2.017)
=24-0
=24
16.08*1.25
=(4*4+0.08)*1.25
=4*4*1.25+0.08*1.25
=4*6+0.1
=24.1
0.25*3.53*0.2*16*1.25
=0.25*3.53*0.2*4*4*1.25
=(0.25*4)*(4*1.25)*3.53*0.2
=1*5*0.2*3.53
=3.53
=1*1*3.53
=
第2个回答 2015-07-16
追答
看得清吗
望采纳.谢谢
谢谢
追问不谢
本回答被提问者采纳第3个回答 2015-07-16
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