问题 解答题
直接写得数
0.77+0.33=
6.38-(1.9+2.38)=0.9+99×0.9=
7÷1.4=
5
9
-
5
6
+
4
9
=
1
8
÷
1
8
×(1-
1
8
)=
1
3
÷2÷
1
3
=
4
5
-
1
3
=
2
3
÷2=
87×
85
86
=
答案

0.77+0.33=1.1; 6.38-(1.9+2.38)=2.1; 0.9+99×0.9=90;

7÷1.4=5;

5
9
-
5
6
+
4
9
=
1
6
1
8
÷
1
8
×(1-
1
8
)=
7
8

1
3
÷2÷
1
3
=0.5;
4
5
-
1
3
=
7
15
2
3
÷2=
1
3

87×

85
86
=85
85
86

故答案为:1.1;2.1;90;5;

1
6
7
8
;0.5;
7
15
1
3
;85
85
86

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