问题 解答题

递等式计算.

1320÷6×40

(1200-785)×21

4500-103×29

(1280+176)÷7.

答案

(1)1320÷6×40

=220×40

=8800;

(2)(1200-785)×21

=415×21

=8715;

(3)4500-103×29

=4500-2987

=1513;

(4)(1280+176)÷7

=1456÷7

=208.

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