问题 解答题
你能直接写出得数的.
①199+171=______
②10÷0.1=______
1
5
-
1
6
=______
④1÷5+2=______
⑤12×
1
3
=______
⑥3.1×0.2=______
7
5
÷
14
15
=______
1
8
×
1
3
÷
1
8
×
1
3
=______.
答案

①199+171=370,

②10÷0.1=100,

1
5
-
1
6
=
1
30

④1÷5+2=2.2,

⑤12×

1
3
=4,

⑥3.1×0.2=0.62,

7
5
÷
14
15
=
3
2

1
8
×
1
3
÷
1
8
×
1
3
=
1
9

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