2,递等试计算(能简便就要简便)
答案:1 悬赏:10 手机版
解决时间 2021-03-01 20:55
- 提问者网友:無理詩人
- 2021-03-01 07:15
2,递等试计算(能简便就要简便)
最佳答案
- 五星知识达人网友:千杯敬自由
- 2021-03-01 08:24
56×125
=7×8×125
=7(8×125)
=7×1000
=7000
4×(9+25)
=4×9+4×25
=36+100
=126
386-137-114-37
=386-(137+114+37)
=386-288
=386-286-2
=100-2
=98
36×36+36×63
=36×(36+63)
=36×99
=36×(100-1)
=36×100-36×1
=3600-36
=3564
=7×8×125
=7(8×125)
=7×1000
=7000
4×(9+25)
=4×9+4×25
=36+100
=126
386-137-114-37
=386-(137+114+37)
=386-288
=386-286-2
=100-2
=98
36×36+36×63
=36×(36+63)
=36×99
=36×(100-1)
=36×100-36×1
=3600-36
=3564
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