Show:
suma
resta
suma/resta
100

3 + 12

15 (quince)

100

19 - 1

18 (dieciocho)

100

2 + 2- 1

3 (tres)

200

18 + 2

20 (veinte)

200

15 - 4

11 (once)

200

3 + 3 + 6

12 (doce)

300

14 + 2

16 (dieciséis)

300

18 - 5

13 (trece)

300

10 + 10 - 3

17 (diecisiete)

400

13 + 4

17 (diecisiete)

400

20 - 7

13 (trece)

400

18 - 8 + 5

15 (quince)

500

11 + 8

19 (diecinueve)

500

15 - 6

9 (nueve)

500
veinte - trece + doce

19 (diecinueve)