When you ask "What number is halfway between 18 and 957?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=18 and Y=957.
To find the number halfway between 18 and 957, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 957 into our formula, we get:
(18 + 957)/2 = 487.5
Thus, the number halfway between 18 and 957 is 487.5.
To check that our answer is correct, we subtract 18 from 487.5 and subtract 487.5 from 957 and compare the two numbers:
487.5 - 18 = 469.5
957 - 487.5 = 469.5
As you can see, the halfway number is 469.5 higher than 18 and 469.5 lower than 957. Therefore, our halfway between answer of 487.5 above is correct.
Halfway Between
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Halfway Between 18 and 958
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