问题 解答题

脱式计算训练营.

23×12÷4

45×(86-77)

76×(12+13)

(350+25)÷5.

答案

(1)23×12÷4,

=276÷4,

=69;

(2)45×(86-77),

=45×9,

=405;

(3)76×(12+13),

=76×25,

=1900;

(4)(350+25)÷5,

=375÷5,

=75.

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