77×42+23×4299×15+15201×2496×4349×101-4977×99+77125×32×25540÷12÷528×111-28×1163×8+91
答案:2 悬赏:50 手机版
解决时间 2021-03-22 12:10
- 提问者网友:鼻尖触碰
- 2021-03-21 21:14
77×42+23×4299×15+15201×2496×4349×101-4977×99+77125×32×25540÷12÷528×111-28×1163×8+91×63+6324×2577×63+77×91.
最佳答案
- 五星知识达人网友:你哪知我潦倒为你
- 2021-03-21 22:43
解:(1)77×42+23×42,
=(77+23)×42,
=100×42,
=4200;
(2)99×15+15,
=(99+1)×15,
=100×15,
=1500;
(3)201×24,
=(200+1)×24,
=200×24+1×24,
=4800+24,
=4824;
(4)96×43,
=(100-4)×43,
=4300-123,
=4071;
(5)49×101-49,
=(101-1)×49,
=100×49,
=4900;
(6)77×99+77,
=77×(99+1),
=77×100,
=7700;
(7)125×32×25,
=(125×8)×(4×25),
=1000×100,
=100000;
(8)540÷12÷5,
=540÷(12×5),
=540÷60,
=9;
(9)28×111-28×11,
=28×(111-11),
=28×100,
=2800;
(10)63×8+91×63+63,
=63×(8+91+1),
=63×100,
=6300;
(11)24×25,
=6×(4×25),
=6×100,
=600;
(12)77×63+77×91,
=77×(63+91),
=77×154,
=11858.解析分析:本题根据整数四则运算的顺序进行解答,注意观察算式的特点,能运用运算定律简算,或者其它简便方法简算的要简算.点评:本题是考察的基本运算法则,根据运算顺序计算.本题有很多可以简算,用相关的运算定律简算.
=(77+23)×42,
=100×42,
=4200;
(2)99×15+15,
=(99+1)×15,
=100×15,
=1500;
(3)201×24,
=(200+1)×24,
=200×24+1×24,
=4800+24,
=4824;
(4)96×43,
=(100-4)×43,
=4300-123,
=4071;
(5)49×101-49,
=(101-1)×49,
=100×49,
=4900;
(6)77×99+77,
=77×(99+1),
=77×100,
=7700;
(7)125×32×25,
=(125×8)×(4×25),
=1000×100,
=100000;
(8)540÷12÷5,
=540÷(12×5),
=540÷60,
=9;
(9)28×111-28×11,
=28×(111-11),
=28×100,
=2800;
(10)63×8+91×63+63,
=63×(8+91+1),
=63×100,
=6300;
(11)24×25,
=6×(4×25),
=6×100,
=600;
(12)77×63+77×91,
=77×(63+91),
=77×154,
=11858.解析分析:本题根据整数四则运算的顺序进行解答,注意观察算式的特点,能运用运算定律简算,或者其它简便方法简算的要简算.点评:本题是考察的基本运算法则,根据运算顺序计算.本题有很多可以简算,用相关的运算定律简算.
全部回答
- 1楼网友:夜余生
- 2021-03-21 22:51
我好好复习下
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