7.9×7.6+7.9简便计算
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7.9×7.6+7.9
= 7.9×(7.6+1)
= 7.9×7.7
= (8-0.1)×7.7
= 8×7.7-0.1×7.7
= 61.6-0.77
= 60.6+1-0.77
= 60.6+0.23
= 60.83
= 7.9×(7.6+1)
= 7.9×7.7
= (8-0.1)×7.7
= 8×7.7-0.1×7.7
= 61.6-0.77
= 60.6+1-0.77
= 60.6+0.23
= 60.83
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