精英家教网 > 小学数学 > 题目详情
69×5        80×54     9×13        128×9       
206×8 15×5×50       44×4+6       (710+230)×8      
(330+230)÷8 (540-370)×6         33×8÷6         745+625÷5.
分析:根据整数乘法和四则运算的计算顺序进行计算.
解答:解:(1)69×5=345
 69
×  5

.
 345
  


(2)80×54=432
 
 54
×  80

.
 4320
  


(3)9×13=117
 
 13
×  9

.
 117
  


(4)128×9=1152
 128
×    9

.
 1152
  


(5)206×8=1648
 206
×    8

.
 1648
  


(6)15×5×50
=75×50
=3750;

(7)44×4+6
=176+6
=182;

(8)(710+230)×8
=940×8
=7520;

(9)(330+230)÷8
=560÷8
=70;

(10)(540-370)×6
=170×6
=1020;

(11)33×8÷6
=264÷6
=44;

(12)745+625÷5
=745+125
=870.
点评:本题主要考查了学生的计算能力,在计算时一定要细心.
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