37+22+63+45530-475-258×(125×ll)44×2572×12564×99+644900÷25÷4(100+4)×2517×43-43×7.
答案:2 悬赏:40 手机版
解决时间 2021-04-10 10:08
- 提问者网友:鼻尖触碰
- 2021-04-09 09:34
37+22+63+45530-475-258×(125×ll)44×2572×12564×99+644900÷25÷4(100+4)×2517×43-43×7.
最佳答案
- 五星知识达人网友:舍身薄凉客
- 2021-04-09 11:09
解:(1)37+22+63+45,
=(37+63)+(22+45),
=100+67,
=167;
(2)530-475-25,
=530-(475+25),
=530-500,
=30;
(3)8×(125×ll),
=8×125×11,
=1000×11,
=11000;
(4)44×25,
=(4×11)×25,
=4×25×11,
=100×11,
=1100;
(5)72×125,
=8×125×9,
=1000×9,
=9000;
(6)64×99+64,
=(99+1)×64,
=100×64,
=6400;
(7)4900÷25÷4,
=4900÷(25×4),
=4900÷100,
=49;
(8)(100+4)×25,
=100×25+4×25,
=2500+100,
=2600;
(9)17×43-43×7,
=(17-7)×43,
=10×43,
=430.解析分析:(1)运用加法交换律和结合律解答,
(2)依据减法性质解答,
(3)(4)(5)运用乘法交换律和结合律解答,
(6)(8)(9)运用乘法分配律解答,
(7)运用除法性质解答.点评:此题是考查四则混合运算,要仔细观察算式的特点,灵活运用一些定律进行简便计算.
=(37+63)+(22+45),
=100+67,
=167;
(2)530-475-25,
=530-(475+25),
=530-500,
=30;
(3)8×(125×ll),
=8×125×11,
=1000×11,
=11000;
(4)44×25,
=(4×11)×25,
=4×25×11,
=100×11,
=1100;
(5)72×125,
=8×125×9,
=1000×9,
=9000;
(6)64×99+64,
=(99+1)×64,
=100×64,
=6400;
(7)4900÷25÷4,
=4900÷(25×4),
=4900÷100,
=49;
(8)(100+4)×25,
=100×25+4×25,
=2500+100,
=2600;
(9)17×43-43×7,
=(17-7)×43,
=10×43,
=430.解析分析:(1)运用加法交换律和结合律解答,
(2)依据减法性质解答,
(3)(4)(5)运用乘法交换律和结合律解答,
(6)(8)(9)运用乘法分配律解答,
(7)运用除法性质解答.点评:此题是考查四则混合运算,要仔细观察算式的特点,灵活运用一些定律进行简便计算.
全部回答
- 1楼网友:舊物识亽
- 2021-04-09 12:04
哦,回答的不错
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