脱式计算 875-143-357  ...
答案:1 悬赏:70 手机版
解决时间 2021-03-14 17:44
- 提问者网友:皆是孤独
- 2021-03-13 17:24
脱式计算 875-143-357  ...
最佳答案
- 五星知识达人网友:从此江山别
- 2021-03-13 17:52
(1)875-143-357
=875-(143+357)
=875-500
=375
(2)8×9×125
=(8×125)×9
=1000×9
=9000
(3)56×67+56×33
=56×(67+33)
=56×100
=5600
(4)45×102
=45×(100+2)
=45×100+45×2
=4500+90
=4590
(5)270÷6÷5
=270÷(6×5)
=270÷30
=9
(6)(80-8)×125
=80×125-8×125
=10000-1000
=9000
=875-(143+357)
=875-500
=375
(2)8×9×125
=(8×125)×9
=1000×9
=9000
(3)56×67+56×33
=56×(67+33)
=56×100
=5600
(4)45×102
=45×(100+2)
=45×100+45×2
=4500+90
=4590
(5)270÷6÷5
=270÷(6×5)
=270÷30
=9
(6)(80-8)×125
=80×125-8×125
=10000-1000
=9000
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