Final answer:
A group of 36 marbles is 6 times bigger than a group of 6 marbles. This is determined by dividing 36 by 6.
Step-by-step explanation:
The question how many times bigger is a group of 36 marbles than a group of 6 marbles is a basic division problem to find a ratio. To solve this, you would divide the larger number of marbles by the smaller number:
36 marbles ÷ 6 marbles = 6
This means that a group of 36 marbles is 6 times bigger than a group of 6 marbles.