When you ask "What number is halfway between 7 and 136?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=7 and Y=136.
To find the number halfway between 7 and 136, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 136 into our formula, we get:
(7 + 136)/2 = 71.5
Thus, the number halfway between 7 and 136 is 71.5.
To check that our answer is correct, we subtract 7 from 71.5 and subtract 71.5 from 136 and compare the two numbers:
71.5 - 7 = 64.5
136 - 71.5 = 64.5
As you can see, the halfway number is 64.5 higher than 7 and 64.5 lower than 136. Therefore, our halfway between answer of 71.5 above is correct.
Halfway Between
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Halfway Between 7 and 137
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