When you ask "What number is halfway between 4 and 378?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=4 and Y=378.
To find the number halfway between 4 and 378, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 378 into our formula, we get:
(4 + 378)/2 = 191
Thus, the number halfway between 4 and 378 is 191.
To check that our answer is correct, we subtract 4 from 191 and subtract 191 from 378 and compare the two numbers:
191 - 4 = 187
378 - 191 = 187
As you can see, the halfway number is 187 higher than 4 and 187 lower than 378. Therefore, our halfway between answer of 191 above is correct.
Halfway Between
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Halfway Between 4 and 379
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