60减20的拆分法

60减20的拆分法

60减20的拆分法

（1）60-20

=（40+20）-20
=40
（2）60-20
=（50+10）-（10+10）
=50+10-10-10
=50-10
=40
（3）60-20
=（4x15)-(4x5)
=4x(15-5)
=4x10
=40
(4)60-20
=(6x10)-(2x10)
=(6-2)x10
=4x10
=40
(5)60-20
=20x3-20
=20x(3-1)
=20x2
=40
(6)60-20
=(30+30)-(30-10)
=30+30-30+10
=30+10
=40
(7)60-20
=(100-40)-20
=100-40-20
=100-60
=40
(8)60-20
=(70-10)-20
=70-30
=40
(9)60-20
=(5x12)-(5x4)
=5x(12-4)
=5x8
=40
(10)60-20
=(2x30)-(2x10)
=2x(30-10)
=2x20
=40
(11)60-20
=(60+20)-(20+20)
=80-40
=40
(12)60-20
=(80-20)-20
=80-40
=40
(13)60-20
=(10+50)-20
=10+(50-20)
=10+30
=40
(14)60-20
=60-(30-10)
=60-30+10
=30+10
=40

如以上回答内容为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！

点此我要举报以上问答信息