When you ask "What number is halfway between 51 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=51 and Y=98.
To find the number halfway between 51 and 98, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 51 and 98 into our formula, we get:
(51 + 98)/2 = 74.5
Thus, the number halfway between 51 and 98 is 74.5.
To check that our answer is correct, we subtract 51 from 74.5 and subtract 74.5 from 98 and compare the two numbers:
74.5 - 51 = 23.5
98 - 74.5 = 23.5
As you can see, the halfway number is 23.5 higher than 51 and 23.5 lower than 98. Therefore, our halfway between answer of 74.5 above is correct.
Halfway Between
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Halfway Between 51 and 99
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