ONE cat.
I have had cats.
Like all animals, it depends on the personality of the animal.
Some animals, do not like children, because children make noises and unexpected movements and grab and swat and are unnerving.
The thing is: TAKE your children WITH you, to a Human Society or animal shelter, sit in the cat room... and hang out a bit. See which cats, NATURALLY approach your children and you and seem to 'like' you.
Young children, will not take care of animals nor know how. You teach them.
AND you will be the Primary care-taker of the pets or pet.
So know that.
And having a pet costs money... physicals, cat litter, toys, food etc.
But cats are great. I love them.
My cats, were wild stray cats and I tamed them, and they were the nicest most mellow cats, I've had.
Again, go WITH YOUR KIDS, to the animal shelter... and sit with the cats for awhile.... I mean, like 1 hour or more. See which cats, are naturally... prone to you AND the kids.
And per personality, of the cats.
Some are hyper, some are mellow.
Just like people.
Some cats, do not like, being handled at all, too.
And some cats... DO NOT LIKE, "playing" with kids.
So, gauge the cat.
Start with ONE cat.
YOU have to acclimate to it too.
And learn to take care of it.
That is easier, with one cat, at first.
Don't go full on getting more than 1 cat at first.
Start... slow.
Keep in mind, if a cat is 'hassled' and irked... it will, hiss and may scratch.
My cats, never ever did that.
But I know some that do.
So... gauge the cat... and their personality.
ASK the shelter workers too... which cat is good, with children....
ALSO, if YOUR kids are rough or hyper or whatever... you have to consider that too. Because, kids can, irk an animal.
And it is not their fault.
And, have your cat spayed or neutered.