When you ask "What number is halfway between 42 and 329?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=329.
To find the number halfway between 42 and 329, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 329 into our formula, we get:
(42 + 329)/2 = 185.5
Thus, the number halfway between 42 and 329 is 185.5.
To check that our answer is correct, we subtract 42 from 185.5 and subtract 185.5 from 329 and compare the two numbers:
185.5 - 42 = 143.5
329 - 185.5 = 143.5
As you can see, the halfway number is 143.5 higher than 42 and 143.5 lower than 329. Therefore, our halfway between answer of 185.5 above is correct.
Halfway Between
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Halfway Between 42 and 330
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