Step-by-step working
- Convert mixed numbers to improper fractions: 2 1/3 = 7/3, 2 = 2/1.
- Multiply the numerators and the denominators: (7 × 2) / (3 × 1) = 14/3.
- As a mixed number: 14/3 = 4 2/3.
Doubling a mixed number
You can multiply a mixed number by a whole number in two parts: multiply the whole number part, multiply the fraction part, then add. 2 × 2 = 4 and 1/3 × 2 = 2/3, so 2 1/3 × 2 = 4 + 2/3 = 4 2/3. This works because multiplication distributes over the two parts of the mixed number.
The other route converts first: 2 1/3 = 7/3, and 7/3 × 2 = 14/3, which is 4 2/3 because 14 ÷ 3 is 4 remainder 2. A common mistake is to double only the whole number and write 4 1/3. A decimal check catches it: 2.333 × 2 is about 4.667, and 4 2/3 is 4.667 too.