问题
计算题
和我一起算一算。
|
答案
(1)583 - 214 - 186
=583-(214+186)
=583- 400
=183
=328+300-5
=628-5
=623
(3)496+257
= 496+4+253
= 500+253
= 753
=1294 - 294-513
=1000-513
= 487
和我一起算一算。
|
(1)583 - 214 - 186
=583-(214+186)
=583- 400
=183
=328+300-5
=628-5
=623
(3)496+257
= 496+4+253
= 500+253
= 753
=1294 - 294-513
=1000-513
= 487