Elementary English & Math Education Tips

Can someone help me with my sons third grade math problem?

Froggy elementary school has five third grade classes. The greatest number of students in a class is 22. The least number of students in a class is 15. Which could be the total number in the fifth third grade class? My son needs to show the action model what is happening in the problem and then the solve is number sentences an estimate choose a strategy and solve the problem and then they want him to write the answer in a sentence and explain why it is reasonable. Then write additional number sentences for this problem. My son and I have been working on this for a while and I just don’t know what to do.

OK

From what I read here, this is confusing. But I will give you my read of this problem.

Max size per class = 22
Min size per class = 15

If all 5 third grade classes had the max = 5(22) = 110
If all 5 third grade classes had the min = 5(15) = 75

So the total number of students in third grade is :
110 >= x >= 75

My guess is that they do not ALL have 22 or they do not ALL have 15, (since they would not give you the max and min if they were all the same), So the most plausible is

Total number of third graders = 110 > x >75.

Hope that helps.

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