题目内容
45×6×3=
320÷8÷5=
35×18+96=
1002-28×16=
63×(105-78)=
(432+18)÷5=
320÷8÷5=
35×18+96=
1002-28×16=
63×(105-78)=
(432+18)÷5=
考点:整数四则混合运算
专题:运算顺序及法则
分析:(1)按照从左向右的顺序进行计算;
(2)根据除法的性质进行简算;
(3)先算乘法,再算加法;
(4)先算乘法,再算减法;
(5)先算减法,再算乘法;
(6)先算加法,再算除法.
(2)根据除法的性质进行简算;
(3)先算乘法,再算加法;
(4)先算乘法,再算减法;
(5)先算减法,再算乘法;
(6)先算加法,再算除法.
解答:
解:(1)45×6×3
=270×3
=810;
(2)320÷8÷5
=320÷(8×5)
=320÷40
=8;
(3)35×18+96
=630+96
=726;
(4)1002-28×16
=1002-448
=554;
(5)63×(105-78)
=63×27
=1701;
(6)(432+18)÷5
=450÷5
=90.
=270×3
=810;
(2)320÷8÷5
=320÷(8×5)
=320÷40
=8;
(3)35×18+96
=630+96
=726;
(4)1002-28×16
=1002-448
=554;
(5)63×(105-78)
=63×27
=1701;
(6)(432+18)÷5
=450÷5
=90.
点评:此题主要考查整数的四则混合运算的运算顺序和应用运算定律进行简便计算.
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