问题 解答题
口算.
3.7+0.63=
3.2×
3
32
=
8-
7
8
=
2.5×6.7×4=
75×99=81÷
1
3
=
1
2
+
1
3
=
1
8
×(8+5)×
1
5
=
答案

3.7+0.63=4.33,3.2×
3
32
=0.3,
8-
7
8
=7
1
8
2.5×6.7×4=67,
75×99=7425,81÷
1
3
=243,
1
2
+
1
3
=
5
6
1
8
×(8+5)×
1
5
=
13
40

判断题
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