Estimate 5/8 − 1/10.
A. 0
B. 1/2
C. 1
D. 1 1/2
To subtract fractions, we need to find a common denominator. The least common multiple of 8 and 10 is 40, so we'll use that as the common denominator.
Rewriting the fractions with the common denominator, we get:
5/8 = 25/40
1/10 = 4/40
Subtracting these fractions, we get:
25/40 - 4/40 = (25 - 4)/40 = 21/40
Therefore, the answer is 21/40, which is approximately 0.525.
So, the closest estimate is A. 0.