题目内容
(2013?道里区模拟)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-
|
分析:根据四则混合运算的运算顺序进行计算即可.
解答: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-
+
,
=
+
,
=
.
=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)
8 |
9 |
1 |
18 |
1 |
2 |
=
17 |
18 |
1 |
2 |
=
13 |
9 |
(19)1-
5 |
6 |
1 |
7 |
=
1 |
6 |
1 |
7 |
=
13 |
42 |
点评:本题考查了简单的四则混合运算,关键是理清楚运算的顺序,然后根据运算顺序逐步求解即可.
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