When you ask "What number is halfway between 4 and 345?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=4 and Y=345.
To find the number halfway between 4 and 345, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 345 into our formula, we get:
(4 + 345)/2 = 174.5
Thus, the number halfway between 4 and 345 is 174.5.
To check that our answer is correct, we subtract 4 from 174.5 and subtract 174.5 from 345 and compare the two numbers:
174.5 - 4 = 170.5
345 - 174.5 = 170.5
As you can see, the halfway number is 170.5 higher than 4 and 170.5 lower than 345. Therefore, our halfway between answer of 174.5 above is correct.
Halfway Between
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Halfway Between 4 and 346
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