When you ask "What number is halfway between 42 and 288?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=288.
To find the number halfway between 42 and 288, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 288 into our formula, we get:
(42 + 288)/2 = 165
Thus, the number halfway between 42 and 288 is 165.
To check that our answer is correct, we subtract 42 from 165 and subtract 165 from 288 and compare the two numbers:
165 - 42 = 123
288 - 165 = 123
As you can see, the halfway number is 123 higher than 42 and 123 lower than 288. Therefore, our halfway between answer of 165 above is correct.
Halfway Between
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Halfway Between 42 and 289
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