When you ask "What number is halfway between 61 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=61 and Y=197.
To find the number halfway between 61 and 197, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 61 and 197 into our formula, we get:
(61 + 197)/2 = 129
Thus, the number halfway between 61 and 197 is 129.
To check that our answer is correct, we subtract 61 from 129 and subtract 129 from 197 and compare the two numbers:
129 - 61 = 68
197 - 129 = 68
As you can see, the halfway number is 68 higher than 61 and 68 lower than 197. Therefore, our halfway between answer of 129 above is correct.
Halfway Between
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Halfway Between 61 and 198
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