A school wants to form marching groups of boys, girls, and teachers. There are 18 boys, 24 girls, and 30 teachers. What is the greatest number of groups that can be formed if each group has the same number of boys, girls, and teachers?
The ______________ property of addition states that when adding three or more numbers, the way you group them (using parentheses) doesn't change the sum.
associative
7 2/3
Make the model and give the equivalent mixed fraction.
6 1/2
Three bells ring at intervals of 6 minutes, 8 minutes, and 10 minutes. If they all rang together at 8:00 AM, at what time will they ring together again?
LCM = 2^3 ⋅ 3 ⋅ 5 = 120 min = 2 hours → 10:00 AM
Find the GCF of 18, 24, and 30 using listing method.
6
Find the LCM of 9, 12, and 15 using prime factorization.
