问题 解答题 直接写出得数. 6×7=5×6=5×7+20=32-18=4×2+3=3×4+18=67-40+28=18-12=5×3=4×7= 答案 6×7=425×6=305×7+20=5532-18=144×2+3=113×4+18=3067-40+28=5518-12=65×3=154×7=28