Where is the lie? The headline said (and I copied and pasted it so no need to deal with my terrible typing):-
GAZA: 20,000 CHILDREN KILLED IN 23 MONTHS OF WAR - MORE THAN ONE CHILD KILLED EVERY HOUR
So it says “more than one child killed every hour”.
The earlier poster who has done the sums reckons it is actually 1.17 children killed every hour. Which is more than one child killed every hour.
The headline could have said “child killed every 51 minutes” which would be more accurate and actually sounds so much worse to me - something about it being in minutes” but it isn’t wrong to say “more than one” when it is indeed more than one.