题目内容

简便计算.
8×7.3+8×2.7
3
5
6
-
2
5
-
3
5

5
6
+
8
17
+
1
6
+
9
17

2
5
+
5
7
-
2
5
+
5
7
(1)8×7.3+8×2.7,
=8×(7.3+2.7),
=8×10,
=80;

(2)3
5
6
-
2
5
-
3
5

=3
5
6
-(
2
5
+
3
5
),
=3
5
6
-1,
=2
5
6


(3)
5
6
+
8
17
+
1
6
+
9
17

=(
5
6
+
1
6
)+(
8
17
+
9
17
),
=1+1,
=2;

(4)
2
5
+
5
7
-
2
5
+
5
7

=(
2
5
-
2
5
)+(
5
7
+
5
7
),
=0+
10
7

=1
3
7
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