When you ask "What number is halfway between 70 and 140?" 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=140.
To find the number halfway between 70 and 140, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 70 and 140 into our formula, we get:
(70 + 140)/2 = 105
Thus, the number halfway between 70 and 140 is 105.
To check that our answer is correct, we subtract 70 from 105 and subtract 105 from 140 and compare the two numbers:
105 - 70 = 35
140 - 105 = 35
As you can see, the halfway number is 35 higher than 70 and 35 lower than 140. Therefore, our halfway between answer of 105 above is correct.
Halfway Between
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Halfway Between 70 and 141
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