计算1320+25-32018.76-3.47-0.530.75+35+14+25314-716+34316+78+556+181-29-79.-五年级数学

+
2
5

=
9
10


(2)18.76-3.47-0.53,
=18.76-(3.47+0.53),
=18.76-4,
=14.76;

(3)0.75+
3
5
+
1
4
+
2
5

=(0.75+
1
4
)+(
3
5
+
2
5
),
=(075+0.25)+1,
=1+1,
=2;

(4)3
1
4
-
7
16
+
3
4

=(3
1
4
+
3
4
)-
7
16

=4-
7
16

=3
9
16


(5)3
1
6
+
7
8
+5
5
6
+
1
8

=(3
1
6
+5
5
6
)+(
7
8
+
1
8
),
=9+1,
=10;
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