10 11/20 + 15 3/5

⚠ 10 11/20 is read as the mixed number 10 + 11/20■15 3/5 is read as the mixed number 15 + 3/5

Let's evaluate:

10

+ \frac{11}{20}

+ 15

+ \frac{3}{5}

ⓘ Start from

10

and move forward

15

on the number line:

10 + 15

25

■To add fractions, put them over the same denominator, then add the numerators:

\frac{11}{20} + \frac{3}{5}

\frac{11 + 4 \times 3}{20}

25 + \frac{11 + 4 \times 3}{20}

ⓘ Perform multiplications before additions and subtractions:

4 \times 3

12

25 + \frac{11 + 12}{20}

ⓘ Calculate the numerator and denominator before dividing:

11 + 12

23

25 + \frac{23}{20}

▶Result:

26

\frac{3}{20}

ⓘ The fraction

\frac{23}{20}

is greater than 1: extract

1

from it and add it to the whole part:

25 + \frac{23}{20}

25 + \frac{20 + 3}{20}

25 + \frac{20}{20} + \frac{3}{20}

25 + 1 + \frac{3}{20}

26 + \frac{3}{20}

The numeric value of:

26 + \frac{3}{20}

equals:

26 + 0.15

▷

26.15

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