When you ask "What number is halfway between 71 and 98?" 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=98.
To find the number halfway between 71 and 98, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 71 and 98 into our formula, we get:
(71 + 98)/2 = 84.5
Thus, the number halfway between 71 and 98 is 84.5.
To check that our answer is correct, we subtract 71 from 84.5 and subtract 84.5 from 98 and compare the two numbers:
84.5 - 71 = 13.5
98 - 84.5 = 13.5
As you can see, the halfway number is 13.5 higher than 71 and 13.5 lower than 98. Therefore, our halfway between answer of 84.5 above is correct.
Halfway Between
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Halfway Between 71 and 99
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