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9.9x4.8简便计算

9.9x4.8=(10-0.1)*4.8=48-0.48=47.52

原式=(10-0.1)*48=480-4.8=475.2满意采纳奥还有疑问请追问

A、2.5x4.8=2.5x4x1.2=10x1.2=12 B、2.5x4.8=2.5x(4+0.8)=10+2=12 C、2.5x4.8=2.5x8x0.6=20x0.6=12

125*8*0.6 ( 125*8)*(4.8÷8)=1000*0.6=600

4.8*9.9*4.9=4.9*(10-0.1)*4.9=(4.9*10-4.9*0.1)*4.9=(49-0.49)*4.9=48.51*4.9=48.51*(5-0.1)=48.51*5-48.51*0.1=242.55-4.851=237.699

9.9乘以4.8+0.48 =9.9x4.8+0.1x4.8 =(9.9+0.1)x4.8 =10x4.8 =48

9.6/0.8-4.8=4.8x(2/0.8-1)=4.8x(2/0.8-0.8/0.8)=4.8x1.2/0.8=6x1.2=7.2

=9.9*4.8+0.1*4.8=(9.9+0.1)*4.8=10*4.8=48

60.4-32.16÷4.8=60.4-32.16÷0.8÷6=60.4-40.2÷6=60.4-6.7=53.7

9.9x4.8=(10-0.1)x4.8=48-0.48=47.52

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