is or are

Under Islamic law, a living ­mother has the right to one-sixth of the estate while a living widow has the right to one-eighth of the portion.

Living children will receive the remaining of the estate.

Netizens are asking “how on earth can a career politician have left behind assets which is said to be worth at least RM2.1 billion.”

Should it be "are" instead of "is"?

Thanks.