
15.9-5.9*2.64简便计算?
2个回答
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简算:
15.9-5.9×2.64
=15.9-(6-0.1)×2.64
=15.9-6×2.64+0.264
=15.9+0.264-6×(2.5+0.14)
=15.9+0.264-6×2.5-6×0.14
=15.9+0.264-15-0.84
=15.9-15-0.84+0.264
=0.06+0.264
=0.324
15.9-5.9×2.64
=15.9-(6-0.1)×2.64
=15.9-6×2.64+0.264
=15.9+0.264-6×(2.5+0.14)
=15.9+0.264-6×2.5-6×0.14
=15.9+0.264-15-0.84
=15.9-15-0.84+0.264
=0.06+0.264
=0.324
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