When you ask "What number is halfway between 10 and 147?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=10 and Y=147.
To find the number halfway between 10 and 147, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 10 and 147 into our formula, we get:
(10 + 147)/2 = 78.5
Thus, the number halfway between 10 and 147 is 78.5.
To check that our answer is correct, we subtract 10 from 78.5 and subtract 78.5 from 147 and compare the two numbers:
78.5 - 10 = 68.5
147 - 78.5 = 68.5
As you can see, the halfway number is 68.5 higher than 10 and 68.5 lower than 147. Therefore, our halfway between answer of 78.5 above is correct.
Halfway Between
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Halfway Between 10 and 148
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