When you ask "What number is halfway between 42 and 977?" 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=977.
To find the number halfway between 42 and 977, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 977 into our formula, we get:
(42 + 977)/2 = 509.5
Thus, the number halfway between 42 and 977 is 509.5.
To check that our answer is correct, we subtract 42 from 509.5 and subtract 509.5 from 977 and compare the two numbers:
509.5 - 42 = 467.5
977 - 509.5 = 467.5
As you can see, the halfway number is 467.5 higher than 42 and 467.5 lower than 977. Therefore, our halfway between answer of 509.5 above is correct.
Halfway Between
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Halfway Between 42 and 978
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