Halfway Between 21 and 345

When you ask "What number is halfway between 21 and 345?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=21 and Y=345.

Halfway Between Line

To find the number halfway between 21 and 345, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 345 into our formula, we get:

(21 + 345)/2 = 183

Thus, the number halfway between 21 and 345 is 183.

To check that our answer is correct, we subtract 21 from 183 and subtract 183 from 345 and compare the two numbers:

183 - 21 = 162
345 - 183 = 162

As you can see, the halfway number is 162 higher than 21 and 162 lower than 345. Therefore, our halfway between answer of 183 above is correct.

Halfway Between
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Halfway Between 21 and 346
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