3.69÷1.8×5.4简便计算
2个回答
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3.69÷1.8x5.4
={3.69÷(0.9+0.9)}x5.4
={3.69÷0.9+3.69÷0.9}x5.4
={4.1+4.1}x5.4
=8.2x5.4
=8.2x(5+0.4)
=8.2x5+8.2x0.4
=41+3.28
=44.28
={3.69÷(0.9+0.9)}x5.4
={3.69÷0.9+3.69÷0.9}x5.4
={4.1+4.1}x5.4
=8.2x5.4
=8.2x(5+0.4)
=8.2x5+8.2x0.4
=41+3.28
=44.28
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