When you ask "What number is halfway between 2 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=2 and Y=154.
To find the number halfway between 2 and 154, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 154 into our formula, we get:
(2 + 154)/2 = 78
Thus, the number halfway between 2 and 154 is 78.
To check that our answer is correct, we subtract 2 from 78 and subtract 78 from 154 and compare the two numbers:
78 - 2 = 76
154 - 78 = 76
As you can see, the halfway number is 76 higher than 2 and 76 lower than 154. Therefore, our halfway between answer of 78 above is correct.
Halfway Between
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Halfway Between 2 and 155
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