When you ask "What number is halfway between 33 and 820?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=33 and Y=820.
To find the number halfway between 33 and 820, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 33 and 820 into our formula, we get:
(33 + 820)/2 = 426.5
Thus, the number halfway between 33 and 820 is 426.5.
To check that our answer is correct, we subtract 33 from 426.5 and subtract 426.5 from 820 and compare the two numbers:
426.5 - 33 = 393.5
820 - 426.5 = 393.5
As you can see, the halfway number is 393.5 higher than 33 and 393.5 lower than 820. Therefore, our halfway between answer of 426.5 above is correct.
Halfway Between
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Halfway Between 33 and 821
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