When you ask "What number is halfway between 49 and 210?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=49 and Y=210.
To find the number halfway between 49 and 210, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 210 into our formula, we get:
(49 + 210)/2 = 129.5
Thus, the number halfway between 49 and 210 is 129.5.
To check that our answer is correct, we subtract 49 from 129.5 and subtract 129.5 from 210 and compare the two numbers:
129.5 - 49 = 80.5
210 - 129.5 = 80.5
As you can see, the halfway number is 80.5 higher than 49 and 80.5 lower than 210. Therefore, our halfway between answer of 129.5 above is correct.
Halfway Between
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Halfway Between 49 and 211
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