When you ask "What number is halfway between 7 and 989?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=7 and Y=989.
To find the number halfway between 7 and 989, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 989 into our formula, we get:
(7 + 989)/2 = 498
Thus, the number halfway between 7 and 989 is 498.
To check that our answer is correct, we subtract 7 from 498 and subtract 498 from 989 and compare the two numbers:
498 - 7 = 491
989 - 498 = 491
As you can see, the halfway number is 491 higher than 7 and 491 lower than 989. Therefore, our halfway between answer of 498 above is correct.
Halfway Between
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Halfway Between 7 and 990
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