105×69-69-5的简便运算
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发布时间:2024-09-25 16:27
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热心网友
时间:2024-10-04 19:49
105×69-69×5
=69×(105-5)
=69×100
=6900
105×69-69-5
=69×(105-1)-5
=69×(100+4)-5
=69×100+69×4-5
=6900+(276-5)
=6900+271
=7171
热心网友
时间:2024-10-04 19:54
105×69-69×5
=69×(105-5)
=69×100
=6900
105×69-69-5
=69×(105-1)-5
=69×(100+4)-5
=69×100+69×4-5
=6900+(276-5)
=6900+271
=7171
热心网友
时间:2024-10-04 19:53
下个作业帮
热心网友
时间:2024-10-04 19:51
105×69-69×5
=69×(105-5)
=69×100
=6900
105×69-69-5
=69×(105-1)-5
=69×(100+4)-5
=69×100+69×4-5
=6900+(276-5)
=6900+271
=7171