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用简便方法计算:1.29+3.7+0.71+6.3125×89×857×101-5724×25×4125×26+125×2252×1041569-(569+815)7.56-(1.56+3.72)

题目详情
用简便方法计算:
1.29+3.7+0.71+6.3     125×89×8       57×101-5724×25×4                   
125×26+125×22                           52×1041569-(569+815)7.56-(1.56+3.72)
用简便方法计算:
1.29+3.7+0.71+6.3     125×89×8       57×101-5724×25×4                   
125×26+125×22                           52×1041569-(569+815)7.56-(1.56+3.72)

1.29+3.7+0.71+6.3     125×89×8       57×101-5724×25×4                   
125×26+125×22                           52×1041569-(569+815)7.56-(1.56+3.72)
1.29+3.7+0.71+6.3     125×89×8       57×101-5724×25×4                   125×26+125×22                           52×1041569-(569+815)7.56-(1.56+3.72)1.29+3.7+0.71+6.3     125×89×8       57×101-5724×25×4                   1.29+3.7+0.71+6.3     125×89×8       57×101-5724×25×4                   125×26+125×22                           52×1041569-(569+815)7.56-(1.56+3.72)125×26+125×22                           52×1041569-(569+815)7.56-(1.56+3.72)
▼优质解答
答案和解析
(1)1.29+3.7+0.71+6.3
=(1.29+0.71)+(3.7+6.3)
=2+10
=12;

(2)125×89×8
=125×8×89
=1000×89
=89000;

(3)57×101-57
=57×(101-1)
=57×100
=5700;

(4)24×25×4
=24×(25×4)
=24×100
=2400;

(5)125×26+125×22
=125×(26+22)
=125×48
=6000;

(6)52×104
=52×(100+4)
=52×100+52×4
=5200+208
=5408;


(7)1569-(569+815)
=1569-569-815
=1000-815
=185;

(8)7.56-(1.56+3.72)
=7.56-1.56-3.72
=6-3.72
=2.28.