What number is halfway between 1.4 and 2.1?

1.75

It is 0.35 more than 1.4 (1.40) and 0.35 less than 2.1 (2.10).

To find the halfway point (the average), add the two numbers and divide by 2.
1.4 + 2.1 = 3.5

3.5 / 2 = 1.75

So 1.75 is half way between 1.4 and 2.1
1.75 is halfway between 1.4 and 2.1.