发布网友 发布时间:2024-10-15 19:08
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热心网友 时间:3小时前
(1)41×28+59×28
=(41+59)×28
=100×28
=2800
(2)28+59×28
=(1+59)×28
=60×28
=1680
(3)28×101
=28×(100+1)
=28×100+28×1
=2800+28
=2828
(4)16×147-16×47
=(147-47)×16
=100×16
=1600
(5)16×301-16
=(301-1)×16
=300×16
=4800
(6)99×16
=(100-1)×16
=100×16-1×16
=1600-16
=1584