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99×64+64
=99×64+64×1
=(99+1)×64
=100×64
=6400
25×136+264×25=
A.8×125+9×8 B.136×631+631×64
C.7×(18+9) D.(133+67)×70
d×(85+64)=×85+d×
6×7×125×8=
9×25×4=
(47×25)× =47×(×4)
进入组卷