When you ask "What number is halfway between 84 and 720?" 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=720.
To find the number halfway between 84 and 720, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 84 and 720 into our formula, we get:
(84 + 720)/2 = 402
Thus, the number halfway between 84 and 720 is 402.
To check that our answer is correct, we subtract 84 from 402 and subtract 402 from 720 and compare the two numbers:
402 - 84 = 318
720 - 402 = 318
As you can see, the halfway number is 318 higher than 84 and 318 lower than 720. Therefore, our halfway between answer of 402 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 84 and 721
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