简便计算.49+256+351 25×44 &...
答案:1 悬赏:80 手机版
解决时间 2021-11-24 00:26
- 提问者网友:人傍凄凉立暮秋
- 2021-11-23 20:57
简便计算.49+256+351 25×44 &...
最佳答案
- 五星知识达人网友:何以畏孤独
- 2021-11-23 21:57
①49+256+351
=(49+351)+256
=400+256
=656;
②25×44
=25×4×11
=100×11
=1100;
③25×99×40
=(25×40)×99
=1000×99
=99000;
④50×19×2
=(50×2)×19
=100×19
=1900;
⑤379-125-75
=379-(125+75)
=379-200
=179;
⑥59×101
=59×100+59
=5900+59
=5959;
⑦9600÷25÷4
=9600÷(25×4)
=9600÷100
=96;
⑧3536-(558+536)
=3536-536-558
=3000-558
=2442.
=(49+351)+256
=400+256
=656;
②25×44
=25×4×11
=100×11
=1100;
③25×99×40
=(25×40)×99
=1000×99
=99000;
④50×19×2
=(50×2)×19
=100×19
=1900;
⑤379-125-75
=379-(125+75)
=379-200
=179;
⑥59×101
=59×100+59
=5900+59
=5959;
⑦9600÷25÷4
=9600÷(25×4)
=9600÷100
=96;
⑧3536-(558+536)
=3536-536-558
=3000-558
=2442.
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