What is the best estimate for the sum of 5/12+2/5

It would be 0.816666666667

But as an estimate, I'd say 1

estimate?

.5+.4=9/10

Olaf: estimates are mental work, in your head. We don't have calculators in our brains.

5/12+5/9

To find the best estimate for the sum of 5/12 + 2/5, you can follow these steps:

1. Find a common denominator: In this case, the common denominator for 12 and 5 is 60.

2. Convert the fractions to have the same denominator:
- Multiply the numerator and denominator of 5/12 by 5: (5/12) * (5/5) = 25/60
- Multiply the numerator and denominator of 2/5 by 12: (2/5) * (12/12) = 24/60

3. Add the fractions with the same denominator: 25/60 + 24/60 = 49/60

Therefore, the best estimate for the sum of 5/12 + 2/5 is 49/60.