When you ask "What number is halfway between 28 and 147?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=28 and Y=147.
To find the number halfway between 28 and 147, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 28 and 147 into our formula, we get:
(28 + 147)/2 = 87.5
Thus, the number halfway between 28 and 147 is 87.5.
To check that our answer is correct, we subtract 28 from 87.5 and subtract 87.5 from 147 and compare the two numbers:
87.5 - 28 = 59.5
147 - 87.5 = 59.5
As you can see, the halfway number is 59.5 higher than 28 and 59.5 lower than 147. Therefore, our halfway between answer of 87.5 above is correct.
Halfway Between
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Halfway Between 28 and 148
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