When you ask "What number is halfway between 20 and 236?" 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=236.
To find the number halfway between 20 and 236, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 20 and 236 into our formula, we get:
(20 + 236)/2 = 128
Thus, the number halfway between 20 and 236 is 128.
To check that our answer is correct, we subtract 20 from 128 and subtract 128 from 236 and compare the two numbers:
128 - 20 = 108
236 - 128 = 108
As you can see, the halfway number is 108 higher than 20 and 108 lower than 236. Therefore, our halfway between answer of 128 above is correct.
Halfway Between
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Halfway Between 20 and 237
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