When you ask "What number is halfway between 43 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=43 and Y=243.
To find the number halfway between 43 and 243, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 43 and 243 into our formula, we get:
(43 + 243)/2 = 143
Thus, the number halfway between 43 and 243 is 143.
To check that our answer is correct, we subtract 43 from 143 and subtract 143 from 243 and compare the two numbers:
143 - 43 = 100
243 - 143 = 100
As you can see, the halfway number is 100 higher than 43 and 100 lower than 243. Therefore, our halfway between answer of 143 above is correct.
Halfway Between
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Halfway Between 43 and 244
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