脱式计算1.84÷2.3×0.25,3.75÷0.12-2.75,2.4×3.5+6.5÷1.3
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1.84÷2.3×0.25
=4.6×0.4×2.3×0.25
=（4.6÷2.3）×（0.4×0.25）
=2×0.1
=0.2
3.75÷0.12-2.75
=375÷12-2.75
=125÷4-2.75
=31.25-2.75
=28.5
2.4×3.5+6.5÷1.3
=1.2×7+5
=8.4+5
=13.4
=4.6×0.4×2.3×0.25
=（4.6÷2.3）×（0.4×0.25）
=2×0.1
=0.2
3.75÷0.12-2.75
=375÷12-2.75
=125÷4-2.75
=31.25-2.75
=28.5
2.4×3.5+6.5÷1.3
=1.2×7+5
=8.4+5
=13.4
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