问题 解答题
脱式计算:
(1)(315×4-364)÷7(2)21×9-962÷74(3)2600÷(1100-36×25)(4)17×(290-288÷2)
答案

(1)(315×4-364)÷7,

=(1260-364)÷7,

=896÷7,

=128;

(2)21×9-962÷74,

=189-13,

=176;

(3)2600÷(1100-36×25),

=2600÷(1100-900),

=2600÷200,

=13;

(4)17×(290-288÷2),

=17×(290-144),

=17×146,

=2482.

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