早教吧 育儿知识 作业答案 考试题库 百科 知识分享

简便计算.25×12×427×4×258×7×125×345﹢278+55372+66+34618+182+92.

题目详情
简便计算.
25×12×4                 27×4×258×7×125×3      
45﹢278+55372+66+34        618+182+92.
简便计算.
25×12×4                 27×4×258×7×125×3      
45﹢278+55372+66+34        618+182+92.

25×12×4                 27×4×258×7×125×3      
45﹢278+55372+66+34        618+182+92.
25×12×4                 27×4×258×7×125×3      45﹢278+55372+66+34        618+182+92.25×12×4                 27×4×258×7×125×3      25×12×4                 27×4×258×7×125×3      45﹢278+55372+66+34        618+182+92.45﹢278+55372+66+34        618+182+92.
▼优质解答
答案和解析
①25×12×4
=(25×4)×12
=100×12
=1200

②27×4×25
=27×(25×4)
=27×100
=2700

③8×7×125×3 
=(125×8)×(3×7)
=1000×21
=21000

④45﹢278+55
=(45+55)+278
=100+278
=378

⑤372+66+34
372+(66+34)
=372+100
=472

⑥618+182+92
=800+92
=892