When you ask "What number is halfway between 64 and 145?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=64 and Y=145.
To find the number halfway between 64 and 145, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 145 into our formula, we get:
(64 + 145)/2 = 104.5
Thus, the number halfway between 64 and 145 is 104.5.
To check that our answer is correct, we subtract 64 from 104.5 and subtract 104.5 from 145 and compare the two numbers:
104.5 - 64 = 40.5
145 - 104.5 = 40.5
As you can see, the halfway number is 40.5 higher than 64 and 40.5 lower than 145. Therefore, our halfway between answer of 104.5 above is correct.
Halfway Between
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Halfway Between 64 and 146
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