计算:5×4+4=______×______=______ 6×6-6=______×______=______7+5×7=______×______=______&n...
计算:5×4+4=______×______=______6×6-6=______×______=______7+5×7=______×______=______9×4-...
计算:5×4+4=______×______=______ 6×6-6=______×______=______7+5×7=______×______=______ 9×4-9=______×______=______.
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