5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便
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5.4×3.8-6.5×5.4+2.7×5.4=递等式计算简便5.4×3.8-6.5×5.4+2.7×5.4=递等式计算简便5.4×3.8-6.5×5.4+2.7×5.4=递等式计算简便5.4×3.8
5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便
5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便
5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便
5.4×3.8-6.5×5.4+2.7×5.4
=5.4×(3.8-6.5+2.7)
=5.4×0
=0
5.4×3.8-6.5×5.4+2.7×5.4= 递等式计算简便
要算式 1)17.48×37-174.8×1.9+1.748×820 2)5.4×3.8-6.5×4.4+2.7×5.4
1:5.6*0.25= 2:5.4*3.8-6.5*4.4+2.7*5.4= (都要巧算哦!)
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0.9 1.8 2.7 ( ) ( )0.9 1.8 2.7 ( ) ( ) 5.4