问题
解答题
脱式计算:
75×12+280÷35
26+14×(70-30)
[175-(49+26)]×20.
答案
(1)75×12+280÷35
=900+8
=908
(2)26+14×(70-30)
=26+14×40
=26+560
=586
(3)[175-(49+26)]×20
=[175-75]×20
=100×20
=2000
脱式计算:
75×12+280÷35
26+14×(70-30)
[175-(49+26)]×20.
(1)75×12+280÷35
=900+8
=908
(2)26+14×(70-30)
=26+14×40
=26+560
=586
(3)[175-(49+26)]×20
=[175-75]×20
=100×20
=2000