早教吧 育儿知识 作业答案 考试题库 百科 知识分享

用简便的方法计算;①283-47-153②842-368-132③273-98④267+153+433⑤782-216-184⑥472-127-123.

题目详情
用简便的方法计算;
①283-47-153  ②842-368-132  ③273-98
④267+153+433 ⑤782-216-184  ⑥472-127-123.
用简便的方法计算;
①283-47-153  ②842-368-132  ③273-98
④267+153+433 ⑤782-216-184  ⑥472-127-123.
用简便的方法计算;
①283-47-153  ②842-368-132  ③273-98
④267+153+433 ⑤782-216-184  ⑥472-127-123.
用简便的方法计算;
①283-47-153  ②842-368-132  ③273-98
④267+153+433 ⑤782-216-184  ⑥472-127-123.
用简便的方法计算;
①283-47-153  ②842-368-132  ③273-98
④267+153+433 ⑤782-216-184  ⑥472-127-123.


▼优质解答
答案和解析
①283-47-153
=283-(47+153)
=283-200
=83;
②842-368-132 
=842-(368+132)
=842-500
=342;
③273-98
=273-(100-2)
=273-100+2
=175;
④267+153+433 
=267+433+153
=700+153
=853;
⑤782-216-184 
=782-(216+184)
=782-400
=382;
⑥472-127-123
=472-(127+123)
=472-250
=222;
故答案为83;342;175;853;382;222.
①283-47-153
=283-(47+153)
=283-200
=83;
②842-368-132 
=842-(368+132)
=842-500
=342;
③273-98
=273-(100-2)
=273-100+2
=175;
④267+153+433 
=267+433+153
=700+153
=853;
⑤782-216-184 
=782-(216+184)
=782-400
=382;
⑥472-127-123
=472-(127+123)
=472-250
=222;
故答案为83;342;175;853;382;222. ①283-47-153
=283-(47+153)
=283-200
=83;
②842-368-132 
=842-(368+132)
=842-500
=342;
③273-98
=273-(100-2)
=273-100+2
=175;
④267+153+433 
=267+433+153
=700+153
=853;
⑤782-216-184 
=782-(216+184)
=782-400
=382;
⑥472-127-123
=472-(127+123)
=472-250
=222;
故答案为83;342;175;853;382;222. ①283-47-153
=283-(47+153)
=283-200
=83;
②842-368-132 
=842-(368+132)
=842-500
=342;
③273-98
=273-(100-2)
=273-100+2
=175;
④267+153+433 
=267+433+153
=700+153
=853;
⑤782-216-184 
=782-(216+184)
=782-400
=382;
⑥472-127-123
=472-(127+123)
=472-250
=222;
故答案为83;342;175;853;382;222. ①283-47-153
=283-(47+153)
=283-200
=83;
②842-368-132 
=842-(368+132)
=842-500
=342;
③273-98
=273-(100-2)
=273-100+2
=175;
④267+153+433 
=267+433+153
=700+153
=853;
⑤782-216-184 
=782-(216+184)
=782-400
=382;
⑥472-127-123
=472-(127+123)
=472-250
=222;
故答案为83;342;175;853;382;222.