When you ask "What number is halfway between 70 and 187?" 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=187.
To find the number halfway between 70 and 187, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 70 and 187 into our formula, we get:
(70 + 187)/2 = 128.5
Thus, the number halfway between 70 and 187 is 128.5.
To check that our answer is correct, we subtract 70 from 128.5 and subtract 128.5 from 187 and compare the two numbers:
128.5 - 70 = 58.5
187 - 128.5 = 58.5
As you can see, the halfway number is 58.5 higher than 70 and 58.5 lower than 187. Therefore, our halfway between answer of 128.5 above is correct.
Halfway Between
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Halfway Between 70 and 188
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