脱式计算:1.29+3.7+0.71+6.3 528×78+472×78 ...
答案:1 悬赏:20 手机版
解决时间 2021-03-29 18:08
- 提问者网友:不要迷恋哥
- 2021-03-28 17:56
脱式计算:1.29+3.7+0.71+6.3 528×78+472×78 ...
最佳答案
- 五星知识达人网友:你哪知我潦倒为你
- 2021-03-28 18:01
(1)1.29+3.7+0.71+6.3
=1.29+0.71+(6.3+3.7)
=2+10
=12;
(2)528×78+472×78
=(528+472)×78
=1000×78
=78000;
(3)125×89×8
=125×8×89
=1000×89
=89000;
(4)57×101-57
=57×(101-1)
=57×100
=5700;
(5)19×96-962÷74
=1824-13
=1811;
(6)(520+480)÷50×4
=1000÷50×4
=20×4
=80;
(7)400-(1300÷65+35)
=400-(20+35)
=400-55
=345;
(8)86.7-(14.3-3.8 )
=86.7-10.5
=76.2.
=1.29+0.71+(6.3+3.7)
=2+10
=12;
(2)528×78+472×78
=(528+472)×78
=1000×78
=78000;
(3)125×89×8
=125×8×89
=1000×89
=89000;
(4)57×101-57
=57×(101-1)
=57×100
=5700;
(5)19×96-962÷74
=1824-13
=1811;
(6)(520+480)÷50×4
=1000÷50×4
=20×4
=80;
(7)400-(1300÷65+35)
=400-(20+35)
=400-55
=345;
(8)86.7-(14.3-3.8 )
=86.7-10.5
=76.2.
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