(2.5+1.25+0.075)×4简便计算

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(2.5+1.25+0.075)×4简便计算
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(2.5+1.25+0.075)×4简便计算
(2.5+1.25+0.075)×4简便计算

(2.5+1.25+0.075)×4简便计算
(2.5+1.25+0.075)×4
=2.5×4+1.25×4+0.075×4
=10+5+0.3
=15.3

(2.5+1.25+0.075)×4简便计算

(2.5+1.25+0.075)×4
=2.5x4+1.25x4+0.075x4
=10+5+0.3
=15+0.3
=15.3

(2.5+1.25+0.075)×4
=2.5*4+1.25*4+0.075*4
=10+5+0.3
=15.3