When you ask "What number is halfway between 20 and 267?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=20 and Y=267.
To find the number halfway between 20 and 267, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 20 and 267 into our formula, we get:
(20 + 267)/2 = 143.5
Thus, the number halfway between 20 and 267 is 143.5.
To check that our answer is correct, we subtract 20 from 143.5 and subtract 143.5 from 267 and compare the two numbers:
143.5 - 20 = 123.5
267 - 143.5 = 123.5
As you can see, the halfway number is 123.5 higher than 20 and 123.5 lower than 267. Therefore, our halfway between answer of 143.5 above is correct.
Halfway Between
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Halfway Between 20 and 268
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