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用简便方法计算下面各题350+195+105+850432-123-77(80+8)×125360÷8÷5135×6+65×6125×3×8.
题目详情
用简便方法计算下面各题
350+195+105+850 | 432-123-77 | (80+8)×125 |
360÷8÷5 | 135×6+65×6 | 125×3×8. |
▼优质解答
答案和解析
(1)350+195+105+850
=350+850+(195+105)
=1200+300
=1500;
(2)432-123-77
=432-(123+77)
=432-200
=232;
(3)(80+8)×125
=80×125+8×125
=10000+1000
=11000;
(4)360÷8÷5
=360÷(8×5)
=360÷40
=9;
(5)135×6+65×6
=(135+65)×6
=200×6
=1200;
(6)125×3×8
=125×8×3
=1000×3
=3000.
=350+850+(195+105)
=1200+300
=1500;
(2)432-123-77
=432-(123+77)
=432-200
=232;
(3)(80+8)×125
=80×125+8×125
=10000+1000
=11000;
(4)360÷8÷5
=360÷(8×5)
=360÷40
=9;
(5)135×6+65×6
=(135+65)×6
=200×6
=1200;
(6)125×3×8
=125×8×3
=1000×3
=3000.
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