Using Unknown

 
2.6   Using Unknown
 

An unknown is a quantity that is not specified.

  Example  
 

There are 7 fish in the aquarium. Ali is going to add in some fish. The total number of fish becomes 10.

An unknown is some fish. 7 plus the unknown is 10.

 
 

 Mathematical sentecnce:

\(7\space+\space\underline{\quad\quad}=10 \\\\\;\;\;\;\;\;\;\;\;\,\Uparrow \\\\\;\;\;\;\text{unknown}\)

 
     
 
 

Using Unknown

 
2.6   Using Unknown
 

An unknown is a quantity that is not specified.

  Example  
 

There are 7 fish in the aquarium. Ali is going to add in some fish. The total number of fish becomes 10.

An unknown is some fish. 7 plus the unknown is 10.

 
 

 Mathematical sentecnce:

\(7\space+\space\underline{\quad\quad}=10 \\\\\;\;\;\;\;\;\;\;\;\,\Uparrow \\\\\;\;\;\;\text{unknown}\)