When you ask "What number is halfway between 84 and 947?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=84 and Y=947.
To find the number halfway between 84 and 947, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 84 and 947 into our formula, we get:
(84 + 947)/2 = 515.5
Thus, the number halfway between 84 and 947 is 515.5.
To check that our answer is correct, we subtract 84 from 515.5 and subtract 515.5 from 947 and compare the two numbers:
515.5 - 84 = 431.5
947 - 515.5 = 431.5
As you can see, the halfway number is 431.5 higher than 84 and 431.5 lower than 947. Therefore, our halfway between answer of 515.5 above is correct.
Halfway Between
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Halfway Between 84 and 948
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