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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+63-44 | 35×4×5×20 | 557-231-146-69-54 | 13×3+17×3 |
72+415+236+928+585+264 | 650÷4÷25 | 85×199+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.
=(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.
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