0.4x99-0.4简便计算简便计算
0.4x99-0.4简便计算
0.4×99-0.4
=0.4×(100-1)
=0.4×100-0.4×1
=40-0.4
=39.6
0.4×99-0.4
=0.4×(100-1)
=0.4×100-0.4×1
=40-0.4
=39.6
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第1个回答 2018-09-05
0.4x99-.04
=.04×100-0.4-0.4
=40-0.8
=39.2
=.04×100-0.4-0.4
=40-0.8
=39.2
第2个回答 2018-09-05
0.4×99+0.4×1-0.4×2
=0.4×(99+1)-0.8
=0.4×100-0.8
=40-0.8
=39.2本回答被网友采纳
=0.4×(99+1)-0.8
=0.4×100-0.8
=40-0.8
=39.2本回答被网友采纳
第3个回答 2018-09-05
=0.4×(99-1)
=0.4×98
=0.4×(100-2)
=0.4×100-0.4×2
=40-0.8
=39.2
=0.4×98
=0.4×(100-2)
=0.4×100-0.4×2
=40-0.8
=39.2