0
Well the way I look at it is...
find the total distance between the two numbers and divide by 2.
so...
-15 is 15 away from 0, and 20 is 20 away from 0.
I then add 15 and 20 together to get 35.
I take 35 and divide by 2 to get 17.5.
From here you can either add 17.5 to -15 or subtract 17.5 from 20.
The answer is 2.5
Another way to look at this is with a line so...
each period is equal to 1 number, the 0 in the line is the number 0
-15..............0...................20
You can see that the distance is greater on the right side because 20 is farther away from 0 than -15 is. You have to find the total distance between the -15 and 20 and divide by 0.
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What is halfway between 15 and 30?
Halfway between 15 and 30 is the average of the two numbers. To find the average, you add the two numbers together and then divide by 2. In this case, (15 + 30) / 2 = 45 / 2 = 22.5. Therefore, 22.5 is halfway between 15 and 30.
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Halfway between 15 and 30 is the average of the two numbers. To find the average, you add the two numbers together and then divide by 2. In this case, (15 + 30) / 2 = 45 / 2 = 22.5. Therefore, 22.5 is halfway between 15 and 30.
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