问题 解答题

脱式计算,能简算的要简算

32.54-0.46-4.54

7.6×99+7.6

102×26-26

98×46.

答案

(1)32.54-0.46-4.54

=32.54-(0.46+4.54)

=32.54-5

=27.54;

(2)7.6×99+7.6

=7.6×(99+1)

=7.6×100

=760;

(3)102×26-26

=(102-1)×26

=101×26

=2626;

(4)98×46

=(100-2)×46

=100×46-2×46

=4600-92

=4508.

单项选择题
单项选择题