if 15 counters are the whole set, how many are 3/5 of the set?

What is 3/5 of 15? Multiply the two numbers to find out.

you should calculate

No, you should

To find out how many counters are 3/5 of the whole set (15 counters), you can use the following steps:

Step 1: Find the value of 1/5 of the set.
Since the whole set consists of 15 counters, you can find 1/5 of the set by dividing 15 by 5:
1/5 of the set = 15 / 5 = 3 counters.

Step 2: Multiply 1/5 of the set by 3.
Since you want to find 3/5 of the set, you can multiply 1/5 of the set (3 counters) by 3:
3/5 of the set = 3 counters * 3 = 9 counters.

Therefore, 3/5 of the whole set (15 counters) is equal to 9 counters.