When you ask "What number is halfway between 79 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=79 and Y=154.
To find the number halfway between 79 and 154, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 79 and 154 into our formula, we get:
(79 + 154)/2 = 116.5
Thus, the number halfway between 79 and 154 is 116.5.
To check that our answer is correct, we subtract 79 from 116.5 and subtract 116.5 from 154 and compare the two numbers:
116.5 - 79 = 37.5
154 - 116.5 = 37.5
As you can see, the halfway number is 37.5 higher than 79 and 37.5 lower than 154. Therefore, our halfway between answer of 116.5 above is correct.
Halfway Between
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Halfway Between 79 and 155
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