Question

Jean adds 35 and 9. How can she solve using only equations to model her thinking?

Answer 1

Since she only has a two digit number and a one digit number she will be able to create one or two equations. 
 
35+9=44
Or she may want to break up the two digit number into two or more parts, for example:  (5×6) + (1×5) + 9 = 44  or  (7×5) + 9 = 44