When you ask "What number is halfway between 57 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=57 and Y=147.
To find the number halfway between 57 and 147, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 57 and 147 into our formula, we get:
(57 + 147)/2 = 102
Thus, the number halfway between 57 and 147 is 102.
To check that our answer is correct, we subtract 57 from 102 and subtract 102 from 147 and compare the two numbers:
102 - 57 = 45
147 - 102 = 45
As you can see, the halfway number is 45 higher than 57 and 45 lower than 147. Therefore, our halfway between answer of 102 above is correct.
Halfway Between
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Halfway Between 57 and 148
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