计算题(1)(7.6-3.6÷2)×1.5  (2)34+2...

2024-12-01 04:23:37
推荐回答(1个)
回答1:

(1)(7.6-3.6÷2)×1.5,
=(7.6-1.8)×1.5,
=5.8×1.5,
=8.7;

(2)

3
4
+2
9
17
+
1
4
+3
8
17

=(
3
4
+
1
4
)+(3
8
17
+2
9
17
),
=1+6,
=7;

(3)
4
5
-
1
3
÷
7
15

=
4
5
-
5
7

=
3
35


(4)
2
3
+(
5
6
?
3
4
)
÷
3
8

=
2
3
+
1
12
÷
3
8

=
2
3
+
2
9

=
8
9