早教吧作业答案频道 -->其他-->
用简便方法计算.189×101-189386-186-25-7532000÷125÷8125×32×2527×187-5×187-2×18789×101.
题目详情
用简便方法计算. 189×101-189 | 386-186-25-75 |
32000÷125÷8 | 125×32×25 |
27×187-5×187-2×187 | 89×101. |
▼优质解答
答案和解析
(1)189×101-189
=189×(101-1)
=189×100
=18900;
(2)386-186-25-75
=(386-186)-(25+75)
=200-100
=100;
(3)32000÷125÷8
=32000÷(125×8)
=32000÷1000
=32;
(4)125×32×25
=(125×8)×(4×25)
=1000×100
=100000;
(5)27×187-5×187-2×187
=(27-5-2)×187
=20×187
=3740;
(6)89×101
=89×(100+1)
=89×100+89×1
=8900+89
=8989.
=189×(101-1)
=189×100
=18900;
(2)386-186-25-75
=(386-186)-(25+75)
=200-100
=100;
(3)32000÷125÷8
=32000÷(125×8)
=32000÷1000
=32;
(4)125×32×25
=(125×8)×(4×25)
=1000×100
=100000;
(5)27×187-5×187-2×187
=(27-5-2)×187
=20×187
=3740;
(6)89×101
=89×(100+1)
=89×100+89×1
=8900+89
=8989.
看了 用简便方法计算.189×10...的网友还看了以下:
1/301/421/561/721/90=?答案为1/101/30+1/42+1/56+1/72+ 2020-04-07 …
1/301/421/561/721/90=?答案为1/101/30+1/42+1/56+1/72+ 2020-04-07 …
三阶行列式的问题已知222,407,185能被37整除,证明行列式|2,2,2||4,0,7||1 2020-05-13 …
5/7+1/8=?2/3+5/9=?3/8+7/12=?4/5-3/10=?8/9-5/7=?11 2020-05-17 …
计算下列各题(能简便计算的要简便计算)21又7/8-(1.875+1又7/10)7又3/7+(3又 2020-06-10 …
1+1/1*3+1/2*3+1/2*5+1/3*5+1/3*7+1/4*7+1/4*9原式=2*[ 2020-06-11 …
哥哥姐姐帮帮我,我给你们20,回答的快在加,信誉!直接写得数.1/7+5/7=1/4+1/3=4/ 2020-07-03 …
帮我解题好吗?⒈算一算(得数为分数).3/5+5/8=2/9+4/15=7/12-5/24=1/4 2020-07-17 …
求解:(1)555*9+111*5(2)[5/8-(2/1+10/230*7/3]除于5/6(3) 2020-07-18 …
直接写得数.1.2+0.3=4+0.6=12.9-5=12+3.5=0.9+0.7=0.6+1.4 2020-07-19 …