发布网友 发布时间:2022-04-24 18:46
共4个回答
热心网友 时间:2023-11-03 12:48
38X39+38
=38x(39+1)
=38x40
=1520
热心网友 时间:2023-11-03 12:48
38X39+38
=38x(39+1)
=38x40
=1520
热心网友 时间:2023-11-03 12:49
38X39+38
=38x(39+1)
=38x40
=(40-2)x40
=40x40-2x40
=1600-80
=1520
热心网友 时间:2023-11-03 12:49
=38*(39+1)
=38*40
=1420
热心网友 时间:2023-11-03 12:49
38X39+38
=38x(39+1)
=38x40
=(40-2)x40
=40x40-2x40
=1600-80
=1520
热心网友 时间:2023-11-03 12:49
=38*(39+1)
=38*40
=1420
热心网友 时间:2023-11-03 12:50
=38×(39+1)=(40-2)×40=40×40-80
热心网友 时间:2023-11-03 12:50
=38×(39+1)=(40-2)×40=40×40-80