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7.8x5.6+2.3x4.4要简便算法,怎么算

7.8x5.6+2.3x4.4 =(8-0.2)*(6-0.4)+(2+0.3)*(4+0.4) ...

你先回答我的问题,你是男是女

7.8x5.6+2.3x4.4=4x(7.8x1.6+2.3x1.1)=4x(12.48x2.53)...

7.8*5.6+2.3*4.4=7.8*4.6+7.8+4.6*2.2=(7.8+2.2)*4.6+...

7.8×5.6+2.3×4.4. =(5.6+4.4)×(7.8+2.2)+(5.6+4.4)×0...

7.8x5.6十2.3+ 4.4 =43.68+2.3+4.4 =45.98+4.4 =50....

7.8X5.6+2.3X4.4=(8-0.2)X(6-0.4)+(3-0.7)X(5-0.6)=48...

7.8×5.6+2.3×4.4 =7.8×5.6+2.3×(10-5.6) =7.8×5.6+2...

7.8-2.4x>3.2x+3.8 3.2x+2.4x<7.8-3.8 5.6x&l...

=0.48×(2.3+8.7-1) =0.48×10 =4.8

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