When you ask "What number is halfway between 79 and 197?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=79 and Y=197.
To find the number halfway between 79 and 197, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 79 and 197 into our formula, we get:
(79 + 197)/2 = 138
Thus, the number halfway between 79 and 197 is 138.
To check that our answer is correct, we subtract 79 from 138 and subtract 138 from 197 and compare the two numbers:
138 - 79 = 59
197 - 138 = 59
As you can see, the halfway number is 59 higher than 79 and 59 lower than 197. Therefore, our halfway between answer of 138 above is correct.
Halfway Between
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Halfway Between 79 and 198
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