Marsha bought 13/8 lb of snow peas and 31/10 lb of carrots at the market. About how many more pounds of carrots did she buy?

Answer 1

31/10 - 13/8 = 124/40 - 65/40 = 59/40
or,
3.1 - 1.625 = 1.475

Answer 2

thank you oobleck

Answer 3

Since it said "About how many "
we are supposed to only estimate here, not do a detailed calculation
13/8 = 1 5/8 which is about 1 1/2 lbs of peas
31/10 = 3 1/10 or about 3 lbs of carrots

so carrots - peas = about 3 - 1 1/2 or 1 1/2 lbs more