144 METHODS IN TEACHING 



One pencil cost 5 cents. I bought 5 pencils and had to 

 pay 25 cents for them. 



There were 23 cows in one field and 57 cows in another 

 field. In the two fields there were 80 cows. 



There were 400 cows in one field and the farmer put 127 

 of them into another field. There were 273 cows left in the 

 first field. 





