问题 解答题

脱式计算.

136×25-840

130×(550-480)

1960-960÷8.

答案

(1)136×25-840

=3400-840

=2560;

(2)130×(550-480)

=130×70

=9100;

(3)1960-960÷8

=1960-120

=1840.

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