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Q: What number is halfway between 42 and 82?

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479

55

It is: (28+82)/2 = 55(28 + 82)/2 = 55

The numbers between 80 and 85 are 81, 82, 83, and 84. The number that is exactly halfway between 80 and 85 is 82.5

42/5 = 82/5

42 over 5 as a mixed number = 82/5

55. To find a number halfway between two numbers on the number line, add the two numbers together and divide by 2, so (82 + 28)/2 = 110/2 = 55. Check the answer: 55-28 = 27, and 82-55 = 27.Example: what is half way between 4 and 6 (the obvious answer is 5), but work it through: (4+6)/2 = 10/2 = 5.

Calculating the average of the two numbers gives you the answer. (Add the two numbers, then divide the result by 2.)

the greatest common factor of 42 and 82 is 2

38 + 44 = 82/2 = 41. So -3 Halfway between two numbers is half their sum: 1/2 x (-44 + 38) = 1/2 x (-6) = -3

It is 81.5, the number halfway between the two middle numbers.

The GCF is 1.

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