add math tag

README.md

@@ -13,7 +13,7 @@ dataset_info:
     num_bytes: 391509.95
     num_examples: 12500
   download_size: 12160789
-  dataset_size: 15660398.0
+  dataset_size: 15660398
 configs:
 - config_name: default
   data_files:
@@ -21,6 +21,8 @@ configs:
     path: data/train-*
   - split: test
     path: data/test-*
+tags:
+- math
 ---
 
 # Simple Math
@@ -139,4 +141,4 @@ with open(out_file, 'w') as f:
     json.dump(data, f)
 ```
 If you use Simple Math o train your model, please cite on the modelcard or the paper.
-Thank you
+Thank you