When you ask "What number is halfway between 70 and 219?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=70 and Y=219.
To find the number halfway between 70 and 219, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 70 and 219 into our formula, we get:
(70 + 219)/2 = 144.5
Thus, the number halfway between 70 and 219 is 144.5.
To check that our answer is correct, we subtract 70 from 144.5 and subtract 144.5 from 219 and compare the two numbers:
144.5 - 70 = 74.5
219 - 144.5 = 74.5
As you can see, the halfway number is 74.5 higher than 70 and 74.5 lower than 219. Therefore, our halfway between answer of 144.5 above is correct.
Halfway Between
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Halfway Between 70 and 220
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