题目内容

【题目】计算:

128+35×3 700﹣125×3 330÷5+46×7 (210+630)÷7

145﹣150÷2+23 560÷4﹣630÷7 12×(280﹣80÷4) 38.7÷9﹣66.8÷40

(135+55)÷(15﹣7) 4.5+5.5÷5﹣3.42 26×4﹣425÷5 (100﹣51)÷0.07

(37×15﹣55)×8 (445÷5+172)×18 300﹣(76+40×3) 8.9×200﹣1.2÷0.06

522÷(328﹣319)+42 ++ 1﹣+

【答案】233;325;388;120;93;50;3120;2.63;23.75;2.18;19;700;4000;4698;104;1760;100;

【解析】

试题分析:根据四则混合运算的运算顺序进行计算即可.

解:(1)128+35×3,

=128+105,

=233;

(2)700﹣125×3,

=700﹣375,

=325;

(3)330÷5+46×7,

=66+322,

=388;

(4)(210+630)÷7,

=840÷7,

=120;

(5)145﹣150÷2+23,

=145﹣75+23,

=70+23,

=93;

(6)560÷4﹣630÷7,

=140﹣90,

=50;

(7)12×(280﹣80÷4),

=12×(280﹣20),

=12×260,

=3120;

(8)38.7÷9﹣66.8÷40,

=4.3﹣1.67,

=2.63;

(9)(135+55)÷(15﹣7),

=190÷8,

=23.75;

(10)4.5+5.5÷5﹣3.42,

=4.5+1.1﹣3.42,

=5.6﹣3.42,

=2.18;

(11)26×4﹣425÷5,

=104﹣85,

=19;

(12)(100﹣51)÷0.07,

=49÷0.07,

=700;

(13)(37×15﹣55)×8,

=(555﹣55)×8,

=500×8,

=4000;

(14)(445÷5+172)×18,

=(89+172)×18,

=261×18,

=4698;

(15)300﹣(76+40×3),

=300﹣(76+120),

=300﹣196,

=104;

(16)8.9×200﹣1.2÷0.06,

=1780﹣20,

=1760;

(17)522÷(328﹣319)+42,

=522÷9+42,

=58+42,

=100;

(18)++

=+

=

(19)1﹣+

=+

=

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