When you ask "What number is halfway between 99 and 340?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=99 and Y=340.
To find the number halfway between 99 and 340, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 99 and 340 into our formula, we get:
(99 + 340)/2 = 219.5
Thus, the number halfway between 99 and 340 is 219.5.
To check that our answer is correct, we subtract 99 from 219.5 and subtract 219.5 from 340 and compare the two numbers:
219.5 - 99 = 120.5
340 - 219.5 = 120.5
As you can see, the halfway number is 120.5 higher than 99 and 120.5 lower than 340. Therefore, our halfway between answer of 219.5 above is correct.
Halfway Between
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Halfway Between 99 and 341
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