简便计算.4+0.8+2.6+9.2  ...
答案:1 悬赏:40 手机版
解决时间 2021-02-12 20:28
- 提问者网友:箛茗
- 2021-02-12 12:20
简便计算.4+0.8+2.6+9.2  ...
最佳答案
- 五星知识达人网友:洒脱疯子
- 2021-02-12 12:48
(1)4+0.8+2.6+9.2
=(4+2.6)+(0.8+9.2)
=6.6+10
=16.6;
(2)101×78
=(100+1)×78
=100×78+1×78
=7800+78
=7878;
(3)4500÷4÷25
=4500÷(4×25)
=4500÷100
=45;
(4)53-8.37-1.63
=53-(8.37+1.63)
=53-10
=43;
(5)15.64+18.2-5.64
=15.64-5.64+18.2
=10+18.2
=28.2;
(6)19×44+19×56
=19×(44+56)
=19×100
=1900.
=(4+2.6)+(0.8+9.2)
=6.6+10
=16.6;
(2)101×78
=(100+1)×78
=100×78+1×78
=7800+78
=7878;
(3)4500÷4÷25
=4500÷(4×25)
=4500÷100
=45;
(4)53-8.37-1.63
=53-(8.37+1.63)
=53-10
=43;
(5)15.64+18.2-5.64
=15.64-5.64+18.2
=10+18.2
=28.2;
(6)19×44+19×56
=19×(44+56)
=19×100
=1900.
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