When you ask "What number is halfway between 29 and 402?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=29 and Y=402.
To find the number halfway between 29 and 402, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 29 and 402 into our formula, we get:
(29 + 402)/2 = 215.5
Thus, the number halfway between 29 and 402 is 215.5.
To check that our answer is correct, we subtract 29 from 215.5 and subtract 215.5 from 402 and compare the two numbers:
215.5 - 29 = 186.5
402 - 215.5 = 186.5
As you can see, the halfway number is 186.5 higher than 29 and 186.5 lower than 402. Therefore, our halfway between answer of 215.5 above is correct.
Halfway Between
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Halfway Between 29 and 403
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