This document contains a series of math problems with addition, subtraction, multiplication and division operations. The problems are arranged in a grid with boxes to write the calculation and result, and buttons to revise or erase the work.

1. MI MATEMATICAS

2. 14 35 92
+11
_______________________________
+24
_______________________________
+43
_______________________________
REVISAR BORRAR

3. 98 79 88
+86
_______________________________
+69
_______________________________
+28
_______________________________
REVISAR BORRAR

4. 825 729 946
+197
_________________________________________
+683
_________________________________________
+484
_____________________________________________
REVISAR BORRAR

5. 939 926 729
692 826 584
+578
_________________________________________
+793
_________________________________________
+567
_________________________________________
REVISAR BORRAR

6. 4.938 7.902 9.691
3.907 6.372 7.787
+3.870 +5.059 +2.653
________________________________________________ ________________________________________________ ________________________________________________
REVISAR BORRAR

7. 98- 62- 85-
54
_______________________________
51
_______________________________
34
_______________________________
REVISAR BORRAR

8. 63- 72- 71-
47
_______________________________
54
_______________________________
26
_______________________________
REVISAR BORRAR

9. 947- 443- 615-
658
_________________________________________
365
_________________________________________
249
_____________________________________________
REVISAR BORRAR

10. 67 85 93
X4
_______________________________
X7
_______________________________
X9
_______________________________
REVISAR BORRAR

11. 93 72 64
X 47
_________________________________________
X 35
_________________________________________
X 86
_________________________________________
______________________ + ______________________ + ______________________ +
REVISAR BORRAR

12. 67 91 86
X 24
_________________________________________
X 59
_________________________________________
X 76
_________________________________________
______________________ + ______________________ + ______________________ +
REVISAR BORRAR