把口诀补充完整,再写乘法算式.二______得八:______×______=______;______×______=______;______三

把口诀补充完整,再写乘法算式.二______得八:______×______=______;______×______=______;______三得九:______×______=______; 三______十二:______×______=______;______×______=______;四四______:______×______=______.

二四得八:2×4=8;4×2=8;
三三得九:3×3=9;
三四十二:3×4=12;4×3=12;
四四十六:4×4=16.
故答案为:四,2,4,8,4,2,8;三,3,3,9;四,3,4,12,4,3,12;十六,4,4.
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