There is no remainder, 3 goes into 87 29 times exactly.
You can tell there is no remainder quickly by adding up the digits. 8+7=15, which divides by 3.
9.6667
9.5
3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.
16.375
Since the remainder is 0 when the numbers are divided by 3, then that number is a multiples of 3. For example, 45/3 = 15 remainder 0 45/4= 11 remainder 1 45/7 = 6 remainder 3
12.4286
9.6667
14.5
14.5
9.5
3 / 40: remainder = 3
5.375
3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.3 times with a remainder of 5 or 3.2 times.
16.375
Since the remainder is 0 when the numbers are divided by 3, then that number is a multiples of 3. For example, 45/3 = 15 remainder 0 45/4= 11 remainder 1 45/7 = 6 remainder 3
0.12
3.375