When you ask "What number is halfway between 3 and 658?" 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=658.
To find the number halfway between 3 and 658, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 658 into our formula, we get:
(3 + 658)/2 = 330.5
Thus, the number halfway between 3 and 658 is 330.5.
To check that our answer is correct, we subtract 3 from 330.5 and subtract 330.5 from 658 and compare the two numbers:
330.5 - 3 = 327.5
658 - 330.5 = 327.5
As you can see, the halfway number is 327.5 higher than 3 and 327.5 lower than 658. Therefore, our halfway between answer of 330.5 above is correct.
Halfway Between
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Halfway Between 3 and 659
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