问题 解答题
口算我最棒.
7.8:______=
1
3
3
8
-
3
8
÷1=
______:0.25=
3
4
4
25
×99+
4
25
=
3.14×2.52=6+6÷
2
5
=
25分:
1
4
时=
3
4
×
5
7
÷
3
4
×
5
7
=
答案

7.8:23.4=
1
3
3
8
-
3
8
÷1=
55
24
0.1875:0.25=
3
4
4
25
×99+
4
25
=16,
3.14×2.52=19.625,6+6÷
2
5
=21,
25分:
1
4
时=
5
3
3
4
×
5
7
÷
3
4
×
5
7
=
25
49

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