際際滷

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1
1
1
2
La mitad de
52 3
600  500=
2
3
12 x 3 =
5
35 + 23 =
4
4
La mitad de
6.2 7
2500  600 =
6
5
2
3
x
3
5
=
9
30 x 3 + 20 =
8
6
2.75+.25-3=
11
15.4  12.4 =
10
7
1
2
+
1
4 13
9 x 6 =
12

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