计算下面各题,能简便的要简便计算.3.72+5.3+7.28+3.7 7000÷...
答案:1 悬赏:50 手机版
解决时间 2021-02-25 16:20
- 提问者网友:眉目添风霜
- 2021-02-25 04:06
计算下面各题,能简便的要简便计算.3.72+5.3+7.28+3.7 7000÷...
最佳答案
- 五星知识达人网友:你可爱的野爹
- 2021-02-25 05:11
(1)3.72+5.3+7.28+3.7,
=(3.72+7.28)+(5.3+3.7),
=11+9,
=20;
(2)7000÷125÷8,
=7000÷(125×8),
=7000÷1000,
=7;
(3)1600-600÷75+25,
=1600-8+25,
=1592+25,
=1617;
(4)35×125×16,
=(35×2)×(125×8),
=70×1000,
=70000;
(5)78×63-78+38×78,
=78×(63-1+38),
=78×100,
=7800;
(6)(480+120÷15)×50,
=(480+8)×50,
=480×50+8×50,
=24000+400,
=24400.
=(3.72+7.28)+(5.3+3.7),
=11+9,
=20;
(2)7000÷125÷8,
=7000÷(125×8),
=7000÷1000,
=7;
(3)1600-600÷75+25,
=1600-8+25,
=1592+25,
=1617;
(4)35×125×16,
=(35×2)×(125×8),
=70×1000,
=70000;
(5)78×63-78+38×78,
=78×(63-1+38),
=78×100,
=7800;
(6)(480+120÷15)×50,
=(480+8)×50,
=480×50+8×50,
=24000+400,
=24400.
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