When you ask "What number is halfway between 63 and 154?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=63 and Y=154.
To find the number halfway between 63 and 154, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 63 and 154 into our formula, we get:
(63 + 154)/2 = 108.5
Thus, the number halfway between 63 and 154 is 108.5.
To check that our answer is correct, we subtract 63 from 108.5 and subtract 108.5 from 154 and compare the two numbers:
108.5 - 63 = 45.5
154 - 108.5 = 45.5
As you can see, the halfway number is 45.5 higher than 63 and 45.5 lower than 154. Therefore, our halfway between answer of 108.5 above is correct.
Halfway Between
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Halfway Between 63 and 155
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