问题 解答题

递等式计算:

(58+37)÷(64-9×5)

95÷(64-45)×101

178-145÷5×6+42

812-700÷(9+31×11)

答案

(1)(58+37)÷(64-9×5)

=95÷(64-45)

=95÷19

=5;

(2)95÷(64-45)×101

=95÷19×101

=5×101

=505;

(3)178-145÷5×6+42

=178-29×6+42

=178-174+42

=4+42

=46;

(4)812-700÷(9+31×11)

=812-700÷(9+345)

=812-700÷350

=812-2

=810.

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