问题
解答题
算一算,比一比下面各题的运算顺序和运算结果.
7200÷40-4×5
7200÷(40-4×5)
7200÷[(40-4)×5].
答案
7200÷40-4×5,
=180-20,
=160;
7200÷(40-4×5),
=7200÷(40-20),
=7200÷20,
=360;
7200÷[(40-4)×5],
=7200÷[36×5],
=7200÷180,
=40.
算一算,比一比下面各题的运算顺序和运算结果.
7200÷40-4×5
7200÷(40-4×5)
7200÷[(40-4)×5].
7200÷40-4×5,
=180-20,
=160;
7200÷(40-4×5),
=7200÷(40-20),
=7200÷20,
=360;
7200÷[(40-4)×5],
=7200÷[36×5],
=7200÷180,
=40.