ellos suman

they add, they sum

→ sumar
sum add + an 3rd-person plural present (indicative or subjunctive)
verb · third plural · present indicative Rare #43,904
they add, they sum
SP: Los dos números suman diez.
EN: The two numbers add up to ten.
Conjugation of sumar
Indicative present
SingularPlural
Third suman
Subjunctive present
SingularPlural
Third suman

Su abuela y usted, suman dos.

Your grandmother and you make two.

— El odio (1995)

Sus deudas suman más de lo que ella puede pagar.

Her debts add up to more than she can pay.

Y parece que no, parece que no, pero estas cosas suman.

And it may not seem like it, it may not seem like it, but these things add up.

— Los lunes al sol (2002)

Los demás se suman a pegar carteles.

The others join in putting up posters.

— Sin amor (2017)

Suman!

Add them up!

— मुन्ना भाई एम बी बी एस (2003)