能简算的简算
答案:1 悬赏:10 手机版
解决时间 2021-12-01 23:34
- 提问者网友:听门外雪花风
- 2021-12-01 13:41
能简算的简算
最佳答案
- 五星知识达人网友:迟山
- 2021-12-01 14:09
3600÷[4×(123-103)]
=3600÷[4×20]
=3600÷4÷20
=900÷20
=45
[300-(46+54)]-25
=300-100-25
=200-25
=175
99×67
=(100-1)×67
=100×67-1×67
=6700-67
=6633
34×44-134×56
=34×44-134×(44+12)
=34×44-134×44-134×12
=(34-134)×44-134×(10+2)
=-100×44-134×10-134×2
=-4400-1340-268
=-6008
523-299
=523-300+1
=224
=3600÷[4×20]
=3600÷4÷20
=900÷20
=45
[300-(46+54)]-25
=300-100-25
=200-25
=175
99×67
=(100-1)×67
=100×67-1×67
=6700-67
=6633
34×44-134×56
=34×44-134×(44+12)
=34×44-134×44-134×12
=(34-134)×44-134×(10+2)
=-100×44-134×10-134×2
=-4400-1340-268
=-6008
523-299
=523-300+1
=224
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