题目内容
用递等式计算.
56.7-(32.6+0.36)
123×30-960÷32
1732-512÷32×23
(75+240)÷(20-5)
56.7-(32.6+0.36)
123×30-960÷32
1732-512÷32×23
(75+240)÷(20-5)
分析:本题根据四则混合运算的运算顺序计算即可:先算乘除,再算加减,有括号的要先算括号里面的.
解答:解:56.7-(32.6+0.36)
=56.7-32.96,
=23.74;
123×30-960÷32
=3690-30,
=3660;
1732-512÷32×23
=1723-16×23,
=1723-368,
=1355;
(75+240)÷(20-5)
=315÷15,
=21.
=56.7-32.96,
=23.74;
123×30-960÷32
=3690-30,
=3660;
1732-512÷32×23
=1723-16×23,
=1723-368,
=1355;
(75+240)÷(20-5)
=315÷15,
=21.
点评:在利用递等式计算时,要注意计算过程的完整性,中间不要有太大跳跃.
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