98.6x9.6-9.5x98.7简便算
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98.6×9.6-9.5×98.7
=98.6×9.6-9.5×(98.6+0.1)
=98.6×9.6-9.5×98.6-9.5×0.1
=98.6×(9.6-9.5)-0.95
=98.6×0.1-0.95
=9.86-0.95
=8.91
=98.6×9.6-9.5×(98.6+0.1)
=98.6×9.6-9.5×98.6-9.5×0.1
=98.6×(9.6-9.5)-0.95
=98.6×0.1-0.95
=9.86-0.95
=8.91
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