脱式计算,如果是能简便算的那就简便算.3.97×0.5×2 4.8×0.25 50.4×1.9-1.8 9.07-22.78÷3.4

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脱式计算,如果是能简便算的那就简便算.3.97×0.5×24.8×0.2550.4×1.9-1.89.07-22.78÷3.4脱式计算,如果是能简便算的那就简便算.3.97×0.5×24.8×0.25

脱式计算,如果是能简便算的那就简便算.3.97×0.5×2 4.8×0.25 50.4×1.9-1.8 9.07-22.78÷3.4
脱式计算,如果是能简便算的那就简便算.
3.97×0.5×2 4.8×0.25 50.4×1.9-1.8 9.07-22.78÷3.4

脱式计算,如果是能简便算的那就简便算.3.97×0.5×2 4.8×0.25 50.4×1.9-1.8 9.07-22.78÷3.4
3.97×0.5×2
=3.97×(0.5×2)
=3.97×1
=3.97
4.8×0.25
=1.2×(4×0.25)
=1.2×1
=1.2
50.4×1.9-1.8
=50.4×(2-0.1)-1.8
=50.4×2-50.4×0.1-1.8
=100.8-5.04-1.8
=100.8-(5.04+1.8)
=100.8-6.84
=93.96
9.07-22.78÷3.4
=9.07-6.7
=2.37

3.75*0.5*2
=3.75*1
=3.75

4.8*0.25
=1.2*4*0.25
=1.2*1
=1.2

50.4*1.9-1.8
=95.76-1.8
=93.96

9.07-22.78÷3.4
=9.07-6.7
=2.37