问题 解答题
能简算的要简算.
0.125×2.5×320
5
9
×
5
6
+
4
9
÷
6
5
答案

(1)0.125×2.5×320,

=0.125×2.5×4×80,

=(0.125×80)×(2.5×4),

=10×10,

=100;

(2)

5
9
×
5
6
+
4
9
÷
6
5

=(

5
9
+
4
9
)×
5
6

=1×

5
6

=

5
6

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