
下列各题能简算的要用简便计算. 3.6÷0.4-1.2×5 0.78×101.
1个回答
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(1)3.6÷0.4-1.2×5,
=9-6,
=3;
(2)0.78×101,
=0.78×(100+1),
=0.78×100+0.78,
=78.78.
=9-6,
=3;
(2)0.78×101,
=0.78×(100+1),
=0.78×100+0.78,
=78.78.
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