问题 解答题

计算下面各题,能简算的要简算.

(1)(6.8-5.4)×2.75-0.9

(2)3.8×5.6+4.4×3.8

(3)1.24×8.3+8.3×1.76

(4)88×0.25×9.

答案

(1)(6.8-5.4)×2.75-0.9,

=1.4×2.75-0.9,

=3.85-0.9,

=2.95;

(2)3.8×5.6+4.4×3.8,

=3.8×(5.6+4.4),

=3.8×10,

=38;

(3)1.24×8.3+8.3×1.76,

=(1.24+1.76)×8.3,

=3×8.3,

=24.9;

(4)88×0.25×9,

=22×9,

=198.

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