| INDICATIVE |  | 
|  Present |  | 
I sum   You sum   He/She/It sums   We sum   You sum   They sum  
  |  Yo sumo  Tu sumas El/Ella/Eso suma Nosotros sumamos Vosotros sumáis Ellos/Ellas/Esos suman
  | 
|  Imperfect |  | 
I was suming   You were suming   He/She/It was suming   We were suming   You were suming   They were suming  
  |  Yo sumaba Tu sumabas El/Ella/Eso sumaba Nosotros sumabamos Vosotros sumabais Ellos/Ellas/Esos sumaban
  | 
|  Perfect |  | 
I sumed   You sumed   He/She/It sumed   We sumed   You sumed   They sumed  
  |  Yo sumé Tu sumaste El/Ella/Eso sumó Nosotros sumamos Vosotros sumasteis Ellos/Ellas/Esos sumaron
  | 
|  Perfect |  | 
I have sumed   You have sumed   He/She/It has sumed   We have sumed   You have sumed   They have sumed  
  |  Yo he sumado Tu has sumado El/Ella/Eso ha sumado Nosotros hemos sumado Vosotros habéis sumado Ellos/Ellas/Esos han sumado
  | 
|  PlusPerfect |  | 
I had sumed   You had sumed   He/She/It had sumed   We had sumed   You had sumed   They had sumed  
  |  Yo había sumado Tu habías sumado El/Ella/Eso había sumado Nosotros habíamos sumado Vosotros habíais sumado Ellos/Ellas/Esos habían sumado
  | 
|  Plusperfect |  | 
I had sumed   You had sumed   He/She/It had sumed   We had sumed   You had sumed   They had sumed  
  |  Yo hube sumado Tu hubiste sumado El/Ella/Eso hubo sumado Nosotros hubimos sumado Vosotros hubisteis sumado Ellos/Ellas/Esos hubieron sumado
  | 
|  Future |  | 
I will sum   You will sum   He/She/It will sum   We will sum   You will sum   They will sum  
  |  Yo sumaré Tu sumaras El/Ella/Eso sumará Nosotros sumaremos Vosotros sumareis Ellos/Ellas/Esos sumarán
  | 
|  Future perfect |  | 
I will have sumed   You will have sumed   He/She/It will have sumed   We will have sumed   You will have sumed   They will have sumed  
  |  Yo habré sumado Tu habrás sumado El/Ella/Eso habrá sumado Nosotros habremos sumado Vosotros habréis sumado Ellos/Ellas/Esos habrán sumado
  | 
| SUBJUNTIVE |  | 
|  Present |  | 
I (that )may sum   You (that )may sum   He/She/It (that )may sum   We (that )may sum   You (that )may sum   They (that )may sum  
  |  Yo sume Tu sumes El/Ella/Eso sume Nosotros sumemos Vosotros suméis Ellos/Ellas/Esos sumen
  | 
|  Imperfect |  | 
I (that )might sum   You (that )might sum   He/She/It (that )might sum   We (that )might sum   You (that )might sum   They (that )might sum  
  |  Yo sumara Tu sumaras El/Ella/Eso sumara Nosotros sumáramos Vosotros sumarais Ellos/Ellas/Esos sumaran
  | 
|  Perfect |  | 
I (whether) sumed   You (whether) sumed   He/She/It (whether) sumed   We (whether) sumed   You (whether) sumed   They (whether) sumed  
  |  Yo haya sumado Tu hayas sumado El/Ella/Eso haya sumado Nosotros hayamos sumado Vosotros hayáis sumado Ellos/Ellas/Esos hayan sumado
  | 
|  Pluperfect |  | 
I (whether) had sumed   You (whether) had sumed   He/She/It (whether) had sumed   We (whether) had sumed   You (whether) had sumed   They (whether) had sumed  
  |  Yo hubiera sumado Tu hubieras sumado El/Ella/Eso hubiera sumado Nosotros hubiéramos sumado Vosotros hubierais sumado Ellos/Ellas/Esos hubieran sumado
  | 
| CONDITIONAL |  | 
|  Present |  | 
I would sum   You would sum   He/She/It would sum   We would sum   You would sum   They would sum  
  |  Yo sumaría Tu sumarías El/Ella/Eso sumaría Nosotros sumaríamos Vosotros sumaríais Ellos/Ellas/Esos sumarían
  | 
|  Perfect |  | 
I would have sumed   You would have sumed   He/She/It would have sumed   We would have sumed   You would have sumed   They would have sumed  
  |  Yo habría sumado Tu habrías sumado El/Ella/Eso habría sumado Nosotros habríamos sumado Vosotros habríais sumado Ellos/Ellas/Esos habrían sumado
  | 
| IMPERATIVE |  | 
|  Present |  | 
let me sum   sum   let him sum   let us sum   sum   let them sum  
  |  Yo - Tu suma  El/Ella/Eso sume Nosotros sumemos Vosotros sumad Ellos/Ellas/Esos sumen
  | 
| PARTICIPLE |  | 
|  Present |  | 
suming  
  |  que suma
  | 
|  Perfect |  | 
sumed  
  |  sumado
  | 
| INFINITIVE |  | 
|  Present |  | 
to sum  
  |  sumar
  | 
|  Perfect |  | 
have sumed  
  |  haber sumado
  | 
| GERUND |  | 
|  Present |  | 
suming  
  |  sumando
  | 
|  Perfect |  | 
having sumed  
  |  habiendo sumado
  |