用简便方法计算7.2÷0.9+2.1 27.3÷1.2-8.8 9.6-2.4×3.5
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用简便方法计算7.2÷0.9+2.127.3÷1.2-8.89.6-2.4×3.5用简便方法计算7.2÷0.9+2.127.3÷1.2-8.89.6-2.4×3.5用简便方法计算7.2÷0.9+2.1
用简便方法计算7.2÷0.9+2.1 27.3÷1.2-8.8 9.6-2.4×3.5
用简便方法计算7.2÷0.9+2.1 27.3÷1.2-8.8 9.6-2.4×3.5
用简便方法计算7.2÷0.9+2.1 27.3÷1.2-8.8 9.6-2.4×3.5
7.2÷0.9+2.1
=8+2.1
=10.1
27.3÷1.2-8.8
=27.3÷0.3÷4-8.8
=22.75-8.8
=13.95
9.6-2.4×3.5
=2.4×4-2.4×3.5
=2.4×(4-3.5)
=2.4×0.5
=2.4÷2
=1.2