When you ask "What number is halfway between 3 and 307?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=3 and Y=307.
To find the number halfway between 3 and 307, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 307 into our formula, we get:
(3 + 307)/2 = 155
Thus, the number halfway between 3 and 307 is 155.
To check that our answer is correct, we subtract 3 from 155 and subtract 155 from 307 and compare the two numbers:
155 - 3 = 152
307 - 155 = 152
As you can see, the halfway number is 152 higher than 3 and 152 lower than 307. Therefore, our halfway between answer of 155 above is correct.
Halfway Between
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Halfway Between 3 and 308
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