When you ask "What number is halfway between 7 and 91?" 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=91.
To find the number halfway between 7 and 91, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 91 into our formula, we get:
(7 + 91)/2 = 49
Thus, the number halfway between 7 and 91 is 49.
To check that our answer is correct, we subtract 7 from 49 and subtract 49 from 91 and compare the two numbers:
49 - 7 = 42
91 - 49 = 42
As you can see, the halfway number is 42 higher than 7 and 42 lower than 91. Therefore, our halfway between answer of 49 above is correct.
Halfway Between
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Halfway Between 7 and 92
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