When you ask "What number is halfway between 7 and 157?" 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=157.
To find the number halfway between 7 and 157, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 157 into our formula, we get:
(7 + 157)/2 = 82
Thus, the number halfway between 7 and 157 is 82.
To check that our answer is correct, we subtract 7 from 82 and subtract 82 from 157 and compare the two numbers:
82 - 7 = 75
157 - 82 = 75
As you can see, the halfway number is 75 higher than 7 and 75 lower than 157. Therefore, our halfway between answer of 82 above is correct.
Halfway Between
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Halfway Between 7 and 158
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