题目内容
脱式计算下面各题.
(1)520+(3270-332)÷26
(2)1580-(720+780÷13)
(1)520+(3270-332)÷26
(2)1580-(720+780÷13)
分析:(1)先算括号内的,再算括号外的除法,最后算加法;
(2)先算扩阿红诶的除法,再算括号内的加法,最后算括号外的减法.
(2)先算扩阿红诶的除法,再算括号内的加法,最后算括号外的减法.
解答:解:(1)520+(3270-332)÷26,
=520+2938÷26,
=520+113,
=633;
(2)1580-(720+780÷13),
=1580-(720+60),
=1580-780,
=800.
=520+2938÷26,
=520+113,
=633;
(2)1580-(720+780÷13),
=1580-(720+60),
=1580-780,
=800.
点评:在脱式计算中,特别注意运算顺序和运算法则.
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