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(4.5X7.5X9.6)/(1.5X2.5X2.4)= 用简便计算

(4.5X7.5X9.6)/(1.5X2.5X2.4)={4.5X(7.5X9.6)}/{1.5X(2.5X2.4)}={4.5X72}/{1.5X6}=324/9=36

你好!(4.4x7.5x4.8)除以(1.5x2.5x2.4)=4.4*3/(1.5*2)=4.4如有疑问,请追问.

7.5x0.8-2.5x2.4简便计算=7.5*0.8-7.5*0.8=0

原式=4.5x(9.6+6.4)=4.5x16=4.5x2x8=9x8=72 供参考.

(4.8x7.5x8.1)/(2.4x2.5x2.7)=(4.8/2.4)*(7.5/2.5)*(8.1/2.7)=2*3*3=18

7.5x1.5十1.5x2.4=(7.5+2.4)x1.5=9.9x1.5=(10-0.1)x1.5=10x1.5-0.1x1.5=15-0.15=14.85

3.2x1.5x4.8x2.5=0.4x8x1.5x8x0.6x2.5=0.4x2.5x8x1.5x8x0.6=1x9x4.8=43.2

(4.8x7.5x8.1)÷(2.5x2.7x2.4)=(4.8÷2.4)*(7.5÷2.5)*(8.1÷2.7)=2*3*3=18

(4.8*7.5*8.1)÷(2.4*2.5*2.7) =(4.8÷2.4)x(7.5÷2.5)x(8.1÷2.7) =2x3x3 =18

7.5x4.7+5.9x2.5=2.5x3x4.7+5.9x2.5=2.5x14.1+5.9x2.5=2.5x(14.1+5.9)=2.5x20=50

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