问题 解答题
直接写出得数.
100-53=
3.47+0.53=4.2×0.5=
3
7
×
14
15
=
6
5
=
1
3
+
1
2
=
1
5
-
1
7
=
42-5=(
1
7
-
1
9
)×63
=
7
8
-
2
5
+
1
8
=
答案

100-53=47,3.47+0.53=4,4.2×0.5=2.1,
3
7
×
14
15
=
2
5
6
5
=
5
2
1
3
+
1
2
=
5
6
1
5
-
1
7
=
2
35
42-5=11,(
1
7
-
1
9
)×63
=2,
7
8
-
2
5
+
1
8
=
3
5

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