When you ask "What number is halfway between 73 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=73 and Y=243.
To find the number halfway between 73 and 243, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 243 into our formula, we get:
(73 + 243)/2 = 158
Thus, the number halfway between 73 and 243 is 158.
To check that our answer is correct, we subtract 73 from 158 and subtract 158 from 243 and compare the two numbers:
158 - 73 = 85
243 - 158 = 85
As you can see, the halfway number is 85 higher than 73 and 85 lower than 243. Therefore, our halfway between answer of 158 above is correct.
Halfway Between
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Halfway Between 73 and 244
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