早教吧 育儿知识 作业答案 考试题库 百科 知识分享

脱式计算,能简算的要简算37-56+63-4435×4×5×20557-231-146-69-5413×3+17×372+415+236+928+585+264650÷4÷2585×199+85(400+8)×25

题目详情
脱式计算,能简算的要简算
37-56+63-4435×4×5×20557-231-146-69-5413×3+17×3
72+415+236+928+585+264650÷4÷2585×199+85(400+8)×25
▼优质解答
答案和解析
(1)37-56+63-44
=(37+63)-(56+44)
=100-100
=0;

(2)35×4×5×20
=(35×4)×(5×20)
=140×100
=14000;

(3)557-231-146-69-54
=557-(231+69)-(146+54)
=557-300-200
=57;

(4)13×3+17×3
=(13+7)×3
=20×3
=60;

(5)72+415+236+928+585+264
=(72+928)+(415+585)+(236+264)
=1000+1000+500
=2500;

(6)650÷4÷25
=650÷(4×25)
=650÷100
=6.5;

(7)85×199+85
=85×(199+1)
=85×200
=17000;

(8)(400+8)×25
=400×25+8×25
=10000+200
=10200.