When you ask "What number is halfway between 10 and 545?" 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=545.
To find the number halfway between 10 and 545, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 10 and 545 into our formula, we get:
(10 + 545)/2 = 277.5
Thus, the number halfway between 10 and 545 is 277.5.
To check that our answer is correct, we subtract 10 from 277.5 and subtract 277.5 from 545 and compare the two numbers:
277.5 - 10 = 267.5
545 - 277.5 = 267.5
As you can see, the halfway number is 267.5 higher than 10 and 267.5 lower than 545. Therefore, our halfway between answer of 277.5 above is correct.
Halfway Between
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Halfway Between 10 and 546
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