问题 解答题
直接写出得数:
30×
5
6
=______;
2-2÷3=______;
7
9
+
7
19
-
7
9
=______;
1.52=______;28.26-3.14=______;99×
97
98
=______;
28÷
4
7
=______;
(49-
7
8
)×
4
7
=______;
0.63=______;
1÷
2
5
=______.
答案

30×

5
6
=25; 2-2÷3=1
1
3
7
9
+
7
19
-
7
9
=
7
19

1.52=2.25;28.26-3.14=25.12; 99×

97
98
=97
97
98

28÷

4
7
=49; (49-
7
8
)×
4
7
=27
1
2
; 0.63=0.216;

1÷

2
5
=2
1
2

故答案为:25,1

1
3
7
19
,2.25,25.12,97
97
98
,49,27
1
2
,0.216,2
1
2

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