8621-6.25÷0.01-1800÷4.8(巧算)
1个回答
7.344÷3.6+6.4×1.3
=3.672÷1.8+6.4×1.3
=1.224÷0.6+(6+0.4)×1.3
=2.04+7.8+0.52
=10.36
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