When you ask "What number is halfway between 71 and 450?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=71 and Y=450.
To find the number halfway between 71 and 450, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 71 and 450 into our formula, we get:
(71 + 450)/2 = 260.5
Thus, the number halfway between 71 and 450 is 260.5.
To check that our answer is correct, we subtract 71 from 260.5 and subtract 260.5 from 450 and compare the two numbers:
260.5 - 71 = 189.5
450 - 260.5 = 189.5
As you can see, the halfway number is 189.5 higher than 71 and 189.5 lower than 450. Therefore, our halfway between answer of 260.5 above is correct.
Halfway Between
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Halfway Between 71 and 451
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