When you ask "What number is halfway between 7 and 320?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=7 and Y=320.
To find the number halfway between 7 and 320, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 320 into our formula, we get:
(7 + 320)/2 = 163.5
Thus, the number halfway between 7 and 320 is 163.5.
To check that our answer is correct, we subtract 7 from 163.5 and subtract 163.5 from 320 and compare the two numbers:
163.5 - 7 = 156.5
320 - 163.5 = 156.5
As you can see, the halfway number is 156.5 higher than 7 and 156.5 lower than 320. Therefore, our halfway between answer of 163.5 above is correct.
Halfway Between
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Halfway Between 7 and 321
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