When you ask "What number is halfway between 42 and 642?" 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=642.
To find the number halfway between 42 and 642, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 642 into our formula, we get:
(42 + 642)/2 = 342
Thus, the number halfway between 42 and 642 is 342.
To check that our answer is correct, we subtract 42 from 342 and subtract 342 from 642 and compare the two numbers:
342 - 42 = 300
642 - 342 = 300
As you can see, the halfway number is 300 higher than 42 and 300 lower than 642. Therefore, our halfway between answer of 342 above is correct.
Halfway Between
Find halfway between two other numbers here!
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