题目内容

计算.(能简算的就简算)
560+62×230÷31               
3.8-1.9+7.2-8.1
50.16×
4
25
-0.16×
4
25
6-(
1
2
-
1
3
)×36.
(1)560+62×230÷31,
=560+62÷31×230,
=560+2×230,
=560+460,
=1020;

(2)3.8-1.9+7.2-8.1,
=3.8+7.2-(1.9+8.1),
=11-10,
=1;

(3)50.16×
4
25
-0.16×
4
25

=(50.16-0.16)×
4
25

=50×
4
25

=8;

(4)6-(
1
2
-
1
3
)×36,
=6-(
1
2
×36-
1
3
×36),
=6-18+12,
=0.
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