7.2÷1.6+5.5简便计算?
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7.2÷1.6+5.5
=72÷16+5.5
=72÷4÷4+5.5
=18÷4+5.5
=16÷4+2÷4+5.5
=4+(0.5+5.5)
=4+6
=10
=72÷16+5.5
=72÷4÷4+5.5
=18÷4+5.5
=16÷4+2÷4+5.5
=4+(0.5+5.5)
=4+6
=10
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