A-A+
和我一起算一算。(1)583-214-186=583-( + ) =583-( ) =(2
问题详情
和我一起算一算。
(1)583-214-186
=583-( + )
=583-( )
=
=328+300-5
=
=
(3)496+257
= 496+4+( )
=
=
=1294 -( )-( )
=
=
参考答案
(1)583-214-186
=583-(214+186)
=583- 400
=183(2)328+295
=328+300-5
=628-5
=623(3)496+257
= 496+4+253
= 500+253
= 753(4)1294-(513+294)
=1294 - 294-513
=1000-513
= 487
考点: