How much is 1 23 plus 1 23?

Answer 1

When adding mixed numbers, it is often easier to convert to improper fractions, do the addition and convert any resulting improper fraction back to a mixed number:

1 2/3 + 1 2/3 = (1×3+2)/3 + (1×3+2)/3 = 5/3 + 5/3 = 10/3 = (3×3+1)/3 = 3 1/3

Answer 2

1.23 × 2 = 2.46