题文
填一填.
(30+6)×3= ×3+ ×3
7×4+18×4=( + )×
(40+4)×25= ×25+ ×25
8×74+51×8=( + )× .
填一填.
(30+6)×3= ×3+ ×3
7×4+18×4=( + )×
(40+4)×25= ×25+ ×25
8×74+51×8=( + )× .
试题篮
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