问题 解答题

脱式计算.

(76+38×30)÷76

14×[752-(152+28)]

360×[1000÷(408+92)]

600×[(135-45)÷90]

9846-87×(360÷60)

508×345÷(1526-1521)

答案

(1)(76+38×30)÷76

=(76+1140)÷76

=1216÷76

=16;

(2)14×[752-(152+28)]

=14×[752-180]

=14×572

=32032;

(3)360×[1000÷(408+92)]

=360×[1000÷500]

=360×2

=720;

(4)600×[(135-45)÷90]

=600×[90÷90]

=600;

(5)9846-87×(360÷60)

=9846-87×6

=9846-522

=9324;

(6)508×345÷(1526-1521)

=508×345÷5

=175260÷5

=35052.

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