When you ask "What number is halfway between 42 and 272?" 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=272.
To find the number halfway between 42 and 272, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 272 into our formula, we get:
(42 + 272)/2 = 157
Thus, the number halfway between 42 and 272 is 157.
To check that our answer is correct, we subtract 42 from 157 and subtract 157 from 272 and compare the two numbers:
157 - 42 = 115
272 - 157 = 115
As you can see, the halfway number is 115 higher than 42 and 115 lower than 272. Therefore, our halfway between answer of 157 above is correct.
Halfway Between
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Halfway Between 42 and 273
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