0.078×78+0.039×20+0.156×6=______.
人气:108 ℃ 时间:2020-06-10 09:50:07
解答
0.078×78+0.039×20+0.156×6,
=0.078×78+0.078×10+0.078×2×6,
=0.078×(78+10+12),
=0.078×100,
=7.8.
故答案为:7.8.
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