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Q: What are the positives and negatives of personal developments groups?
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Continue Learning about Math & Arithmetic

Why is a negative number times a positive number always negative?

Take a simple multiplication question such as 2x3It mean that there are 2 groups and these groups each have 3 things in them (or 3 groups each with 2 things)So you add the groups up and get 6Now if you have 2x-3 you have 2 groups and they each have -3 things in them. You add all the negatives 3s up just like you did in the last question and have -6.It is difficult to imagine -3 things or -6 things, so just think of multiplying by a negative will reverse the sign (kind of like reversing the polarity of battery terminals). So if you reverse them one time (negative X positive) then it is opposite of what it was:If the number to be multiplied by is Positive, then the answer is negative : Negative X Positive = Negative.If the number to be multiplied by is Negative, then the answer is positive : Negative X Negative = Positive.If you multiply a number by a positive, it does not reverse the sign: Positive x something equals the a number with the same sign as the something.


How many groups can 21 be divided to?

7 groups, with 3 in each3 groups, with 7 in each21 groups, with 1 in each1 group, with 21 in each


There are 32 students in a class how many ways can the class be divided in to groups with an equal number?

2 groups of 16, 4 groups of 8, 8 groups of 4, 16 groups of 2. Not really divided or in groups, but there could be 1 group of 32 or everyone by themselves.


Marcy blew up 24 balloons. She tied the balloons together in groups of 4. How many groups did Marcy make?

24/4 = 6 groups


If there were 64 sixth graders list all of the ways they could have been divided equally into groups of 10 or fewer students?

6.4