99点9×0点8+11点11*18
99ç¹9Ã0ç¹8+11ç¹11*18
=99.9Ã0.8+111.1Ã1.8
=99.9Ã0.8+111.1Ã0.8+111.1
=ï¼99.9+111.1)Ã0.8+111.1
=211Ã0.8+111.1
=168.8+111.1
=279.9
=99.9Ã0.8+111.1Ã1.8
=99.9Ã0.8+111.1Ã0.8+111.1
=ï¼99.9+111.1)Ã0.8+111.1
=211Ã0.8+111.1
=168.8+111.1
=279.9
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第1个回答 2016-10-05
99.9×0.8+11.11×18
=11.1×9×2×0.4+11.11×18
=18×(11.1×0.4+11.11)
=18×(4.44+11.11)
=18×15.55
=279.9
=11.1×9×2×0.4+11.11×18
=18×(11.1×0.4+11.11)
=18×(4.44+11.11)
=18×15.55
=279.9