The document contains 10 math problems in addition, subtraction format. The problems include: adding 13 and 25, adding 12 and 32, subtracting 35 from 47, subtracting 20 from 25, subtracting 15 from 27, and subtracting 20 from 30. It asks "How many?" at the end, implying the document is providing math problems and asking for the total number of problems.

2. 11 12 13 14 15
16 17 18 19 20

3. 25
26 27 28 29 30
21 22 23 24

4. 35
36 37 38 39 40
31 32 33 34

5. 45
46 47 48 49 50
41 42 43 44

7. 36
How many?

8. 45

9. 34
adittio
n

10. 49
40
9
+

11. 38
25
13
+

12. 44
32
12
+

14. 47
12
-
35

15. 45
25
-
20

16. 39
27
-
15

17. 50
30
-
20

18. https://es.liveworksheet
s.com/zi1770551cy