When you ask "What number is halfway between 42 and 154?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=154.
To find the number halfway between 42 and 154, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 154 into our formula, we get:
(42 + 154)/2 = 98
Thus, the number halfway between 42 and 154 is 98.
To check that our answer is correct, we subtract 42 from 98 and subtract 98 from 154 and compare the two numbers:
98 - 42 = 56
154 - 98 = 56
As you can see, the halfway number is 56 higher than 42 and 56 lower than 154. Therefore, our halfway between answer of 98 above is correct.
Halfway Between
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Halfway Between 42 and 155
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