When you ask "What number is halfway between 7 and 987?" 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=987.
To find the number halfway between 7 and 987, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 987 into our formula, we get:
(7 + 987)/2 = 497
Thus, the number halfway between 7 and 987 is 497.
To check that our answer is correct, we subtract 7 from 497 and subtract 497 from 987 and compare the two numbers:
497 - 7 = 490
987 - 497 = 490
As you can see, the halfway number is 490 higher than 7 and 490 lower than 987. Therefore, our halfway between answer of 497 above is correct.
Halfway Between
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Halfway Between 7 and 988
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