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)18.76-3.47-0.53,
=18.76-(3.47+0.53),
=18.76-4,
=14.76;
(3)0.75+
+
+
,
=(0.75+
)+(
+
),
=(075+0.25)+1,
=1+1,
=2;
(4)3
-
+
,
=(3
+
)-
,
=4-
,
=3
;
(5)3
+
+5
+
,
=(3
+5
)+(
+
),
=9+1,
=10;
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 |
6 |
1 |
8 |
=(3
1 |
6 |
5 |
6 |
7 |
8 |
1 |
8 |
=9+1,
=10;
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