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6.5乘以2.3加上6.5乘以6.7加上6.5的简便计算方法是...

原式 =6.5x2.3+6.5x6.7+6.5 =6.5x(2.3+6.7+1) =6.5x(9+1) =6.5x10 =65

6.5X2.3+6.7X6.5 =6.5X(2.3+6.7) =6.5X9 =58.5

6.5x3.7-2.5x3.7+3.7 =(6.5-2.5+1)x3.7 =5x3.7 =18.5

7.6×5.3+7.6×3.7+7.6 =7.6×(5.3+3.7+1) =7.6×100 =760

解答过程: 3.7×6/5+1.3÷5/6 =3.7×6/5+1.3×6/5 =(3.7+1.3)×6/5 =5×6/5 =6 答案是6.

5.5乘以17.3加6.7乘以5.5 =5.5×(17.3+6.7) =5.5×24 =132

5.2+6.7-5.2+6.7 =(5.2-5.2)+(6.7+6.7) =13.4

12.3乘以6.5加7.7乘以6.5 =12.3x6.5+7.7x6.5 =6.5x(12.3+7.7) =6.5x20 =130

1+2+3+4+5+6+7+8+7+6+5+4+3+2+ 1÷888888x888888 =1+2+3+4+5+6+7+8+7+6+5+4+3+2+1 =(1+2+3+4+5+6+7)x2+8 =(1十7)x7x2/2十8 =56+8 =64

3.5乘以0.76加上0.65乘以7.6 =3.5×0.76+6.5×0.1×7.6 =3.5×0.76+6.5×0.76 =(3.5+6.5)×0.76 =10×0.76 =7.6

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