When you ask "What number is halfway between 7 and 149?" 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=149.
To find the number halfway between 7 and 149, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 149 into our formula, we get:
(7 + 149)/2 = 78
Thus, the number halfway between 7 and 149 is 78.
To check that our answer is correct, we subtract 7 from 78 and subtract 78 from 149 and compare the two numbers:
78 - 7 = 71
149 - 78 = 71
As you can see, the halfway number is 71 higher than 7 and 71 lower than 149. Therefore, our halfway between answer of 78 above is correct.
Halfway Between
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Halfway Between 7 and 150
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