如题所述
先用交换律,再用乘法分配律的逆运用
12.5×7×8.88
=12.5×8.88×7
=12.5×(8+0.8+0.08)×7
=(12.5×8+12.5×0.8+12.5×0.08)×7
=(100+10+1)×7
=111×7
=777
望采纳,谢谢
12.5×7×8.88
=12.5×8.88×7
=12.5×(8+0.8+0.08)×7
=(12.5×8+12.5×0.8+12.5×0.08)×7
=(100+10+1)×7
=111×7
=777
望采纳,谢谢
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