When you ask "What number is halfway between 1 and 243?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=243.
To find the number halfway between 1 and 243, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 243 into our formula, we get:
(1 + 243)/2 = 122
Thus, the number halfway between 1 and 243 is 122.
To check that our answer is correct, we subtract 1 from 122 and subtract 122 from 243 and compare the two numbers:
122 - 1 = 121
243 - 122 = 121
As you can see, the halfway number is 121 higher than 1 and 121 lower than 243. Therefore, our halfway between answer of 122 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 1 and 244
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