选择合适的方法计算 10.8-0.8÷(0.35+0.05)8×[1÷(2.3-2.25)]2.64×9.9+0.26418×(16+13-12)
方法
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选择合适的方法计算
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①10.8-0.8÷(0.35+0.05),
=10.8-0.8÷0.4,
=10.8-2,
=8.8;②8×[1÷(2.3-2.25)],
=8×[1÷0.05],
=8×20,
=160;③2.64×9.9+0.264,
=0.264×99+0.264,
=0.264×(99+1),
=0.264×100,
=26.4;④18×(16+13-12),
=18×16+18×13-18×12,
=3+6-9,
=0.
